Perhaps you should try some spelling variations:
canh thanh » canh tranh, danh thanh, anh thanh
thanh tuan » thanh toan, thanh xuan, thanh thanh
cong thanh » dong thanh, cong trinh, cong tan
hoc thieu » toc thieu, hoc hien
tuan cong » thuan cong, luan cong, tran cong
cong cong » cong dong, trong cong, dung cong
tran chau » tranh chap, tran huu
ho chieu » theo chieu, doi chieu, mot chieu
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) OR (hoc thieu)) sach - canh thanh tuan cong cong thanh ((tran chau) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (hoc thieu)) sach - canh thanh tuan cong cong thanh ((tran chau) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (hoc thieu)) sach - canh thanh tuan cong cong thanh ((tran chau) or (toan tap))".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (hoc thieu)) sach - canh thanh tuan cong cong thanh ((tran chau) or (toan tap))*.