Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
nhung cong » dung cong, thong cong, nhung don
hoc thieu » toc thieu, hoc hien
thanh tra » thanh toan, thanh hoa
hang cong » dang cong, hang nong, bang cong
tra tuan » tran tuan, tra quan, tri tuan
toan cau » toan ban, toan tap, toan tai
toan cao » toan ban, toan tap

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