Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
dong cong » duong cong, dung cong, dang cong
tran chau » tranh chap, tran huu
trung va » truong va, trang va, trung ha
cong tan » cong tac, cong san, cong thanh
tran cao » toan cao, trang cho, tranh cac
va dong » van dong, ha dong, xa dong

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

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