Perhaps you should try some spelling variations:
canh trinh » canh tranh, hanh trinh, canh tinh
sach thap » sach tham, sach phap, sach nha
thanh tri » thanh tra, chinh tri, thanh hai
thanh tai » thanh hai, thanh toan, doanh tai
thap tai » phap tai, tap tai, thai tai
trinh tu » trinh ky, trinh do
tu sach » thu sach, su sach, te sach
su canh » suc canh, su can, su anh
vu sach » vu bach, su sach, vu khach

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tu sach thap tai ) or ((( su canh trinh tu ) or ( vu sach ((thanh tri) OR (thanh tai)) ))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach thap tai ) OR ((( su canh trinh tu ) OR ( vu sach ((thanh tri) OR (thanh tai)) )))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( tu sach thap tai ) or ((( su canh trinh tu ) or ( vu sach ((thanh tri) OR (thanh tai)) ))))".
• Adding a wildcard symbol may retrieve word variants: (( tu sach thap tai ) or ((( su canh trinh tu ) or ( vu sach ((thanh tri) OR (thanh tai)) ))))*.