Perhaps you should try some spelling variations:
thanh dung » thanh duong, thanh tung, thanh hung
chieu sang » chieu sach, chieu xanh, hieu lang
phung cong » nhung cong, phong cong, nhung chong
cho phung » cho nhung, cho chuong, pho phuong
hieu van » hieu va, thien van, lieu va
cong tan » cong tac, cong san, cong thanh
tan doan » tran doan, tap doan, van doan
doan tap » toan tap, doan cap, doanh tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((chieu sang) or (hieu van)) - thanh dung cho phung cong tan doan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((chieu sang) OR (hieu van)) - thanh dung cho phung cong tan doan tap.
• Adding a wildcard symbol may retrieve word variants: doc ((chieu sang) or (hieu van)) - thanh dung cho phung cong tan doan tap*.