Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
hoc thieu » toc thieu, hoc hien
phan dang » phan dau, nhan dan, phan ung
phan cong » thanh cong
van dung » van dong, xay dung, tin dung
dung dat » dung va, dung tai
dat van » dao van, dat va, dam van
van phi » van chi, van phu, van nhi
phi dau » phan dau

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 - ((phan dang) or (phan cong)) van dung dat van phi dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - ((phan dang) OR (phan cong)) van dung dat van phi dau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - ((phan dang) or (phan cong)) van dung dat van phi dau*.