Perhaps you should try some spelling variations:
thanh thang » nhanh thang, thanh thanh, thanh hang
hien sang » hien trang, khien bang, chieu sang
thang van » tang van, thanh van, thong van
dung cong » dung trong
van dung » van dong, xay dung, tin dung
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: hoc hien sang - thanh thang van dung cong tac ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien sang - thanh thang van dung cong tac ((toan cao) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoc hien sang - thanh thang van dung cong tac ((toan cao) or (toan ban))*.