Perhaps you should try some spelling variations:
thanh trang » thanh trung, hanh trang, thanh thang
phuong cong » phuong dong, phong cong, phung cong
thieu sang » chieu sang, thieu khang, thieu quang
va phuong » va thuong, cac phuong
trang va » tran van, hang va
cong tac » cong ty
toan cao » toan tap
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu sang - thanh trang va phuong cong tac ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu sang - thanh trang va phuong cong tac ((toan cao) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: toc thieu sang - thanh trang va phuong cong tac ((toan cao) or (toan ban))*.