Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
trang va » tran van, hang va
cong tac » cong ty
toan ban » van ban
tran va » tran van, tranh va, toan va

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 xanh - hanh ((tran va) OR (trang va)) nhung cong tac ((toan tap) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh ((tran va) OR (trang va)) nhung cong tac ((toan tap) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - hanh ((tran va) OR (trang va)) nhung cong tac ((toan tap) or (toan ban))".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh ((tran va) OR (trang va)) nhung cong tac ((toan tap) or (toan ban))*.