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S dng du
Dng du trc nhng t m kt qu cho chnh xc.
Hu ch khi tm tn ngi, tn c quan t chc, t chuyn ngnh.
CCH G T KHA
S dng du +
Dng du + trc nhng t mun n phi xut hin trong kt qu.
CCH G T KHA
S dng du -
Dng du - trc nhng t khng mun n xut hin trong kt qu
Lu : trc du - c khong trng
CCH G T KHA
S dng ton t OR
Dng ton t OR kt qu s l nhng trang cha mt trong nhng t kha tm
kim
Lu : OR vit hoa
CCH G T KHA
S dng t kha Filetype
Dng t kha filetype tm kim thng tin theo kiu tp tin c th. File:
doc, pdf, ppt,...
CCH G T KHA
S dng t kha Site
Dng t kha site tm kim thng tin trong mt trang web hoc mt tn min.
V d: site:trang web ni dung hoc ni dung site:trang web
http://scholar.google.com
http://scholar.google.com
u im:
Kh nng lc thng tin t nhng ngun ng tin cy: CSDL, NXB
gio dc, ngun lu tr ca cc trng i hc, cc th vin,..
Tm kim thng tin t ngun web m hoc web thng mi tm
c ton vn ca ti liu nghin cu t nhiu ngun min ph
hoc thng tin th mc
Cung cp cng c h tr vic nh gi cht lng ti liu tm
c
?
Ch s tc ng
(Impact Factor)
Ngun: http://www.freemedicaljournals.com
Cardiology - 2016
Ngun: http://www.freemedicaljournals.com
Nejm VINTAGE
Free to access
in Vietnam
http://thelancet.com
Lancet (surgery) Lancet arch
70555
Tm Tp ch trong HINARI
Paste vo thanh tm
kim v n Enter
http://sci-hub.cc
Thng 10/2015, mt ta n
cp qun ti New York ra
lnh ng ca Sci-hub,
ngng tn min Sci-hub.org.