Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
quan trong » gian trong
thanh chau » thanh cha, thanh cham, thanh chu
hoc chieu » hoc thieu, ho chieu, hoc hien
thanh lap » thanh san, phan lap, thanh hai
tinh van » trinh van, dinh van, tinh va
van quan » van ban
cong tan » cong tac, cong san, cong thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu sang - tinh van quan trong cong tan ((thanh chau) or (thanh lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sang - tinh van quan trong cong tan ((thanh chau) OR (thanh lap))*.