Perhaps you should try some spelling variations:
thanh tung » thanh cong
chieu sang » chieu sach, chieu xanh, hieu lang
tung quoc » trung quoc, tung buoc, dung quoc
quoc hung » duc hung
hung cong » nhung cong, hung cuong, phung cong
hieu van » hieu va, thien van, lieu va
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cao » toan ban, toan tap

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 sang) or (hieu van)) - thanh tung quoc hung cong tan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (hieu van)) - thanh tung quoc hung cong tan toan cao.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (hieu van)) - thanh tung quoc hung cong tan toan cao*.