Perhaps you should try some spelling variations:
thanh truong » thanh trung, thanh thuong, thanh tung
thieu sang » chieu sang, thieu khang, thieu quang
quan trong » gian trong
xuat thong » xuat thuong, suat thong, luat thuong
hoc thieu » toc thieu, hoc hien
duong van » duong va, luong va, dang van
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: hoc thieu sang - thanh truong ((quan trong) or (xuat thong)) ((duong van) or (trong cac)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - thanh truong ((quan trong) OR (xuat thong)) ((duong van) OR (trong cac)) toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - thanh truong ((quan trong) or (xuat thong)) ((duong van) or (trong cac)) toan ban*.