Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
luong van » luong va, duong van, luong vat
theo chu » theo chieu, cho chu, chao chu
long van » song van, lang van, tong van
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » 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: ((theo tieu) or (theo chu)) xanh - nhanh ((long van) OR (luong van)) nhung cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo tieu) OR (theo chu)) xanh - nhanh ((long van) OR (luong van)) nhung cong tac toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo tieu) or (theo chu)) xanh - nhanh ((long van) OR (luong van)) nhung cong tac toan cau".
• Adding a wildcard symbol may retrieve word variants: ((theo tieu) or (theo chu)) xanh - nhanh ((long van) OR (luong van)) nhung cong tac toan cau*.