Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu sang » chieu sang, thieu khang, thieu quang
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
hoc thieu » toc thieu, hoc hien
trung va » truong va, trang va, trung ha
dung lam » dung luan, dung tai, dung dat
ap dung » xay dung, van dung

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 - thanh trung va ((nhung cong) OR (thong cong)) ap dung lam~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sang - thanh trung va ((nhung cong) OR (thong cong)) ap dung lam".
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - thanh trung va ((nhung cong) OR (thong cong)) ap dung lam*.