Perhaps you should try some spelling variations:
sach tranh » canh tranh
cach thanh » cac thanh, cach nhanh, danh thanh
thanh tri » thanh tra, thanh tai, chinh tri
tranh thi » tranh thai, tran thi, trinh thi
manh toan » thanh toan, anh tuan, tinh toan
toan tri » toan tai, tran tri, toan toi
tu cach » tu cac
so sach » so sanh, bo sach, co sach
vu manh » vu minh, vu anh, tu manh

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (( tu cach thanh tri ) or ((( so sach tranh thi ) or ( vu manh toan tri ))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu cach thanh tri ) OR ((( so sach tranh thi ) OR ( vu manh toan tri )))).
• Adding a wildcard symbol may retrieve word variants: (( tu cach thanh tri ) or ((( so sach tranh thi ) or ( vu manh toan tri ))))*.