Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu sang » chieu sang, thieu khang, thieu quang
hoc thieu » toc thieu, hoc hien
tran chau » tranh chap, tran huu
cua dong » chua dong, cua dang, cua nong
cong tan » cong tac, cong san, cong thanh
ran cau » van cau, ban cau, can cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu sang - thanh trung ((cua dong) or (cua cong)) cong tan ((tran chau) or (ran cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - thanh trung ((cua dong) OR (cua cong)) cong tan ((tran chau) OR (ran cau)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - thanh trung ((cua dong) or (cua cong)) cong tan ((tran chau) or (ran cau))*.