Perhaps you should try some spelling variations:
thang luong » thang long, hang luong, thuong luong
theo chieu » theo tieu, theo chu, thi chieu
thanh tung » thanh cong
cap thang » cau thang, cang thang, nam thang
luong tai » dung tai, luong va
ho chieu » hoc thieu, doi chieu, mot chieu
tai toan » bai toan, tap toan, tai tuan
toan tap » toan ban

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chieu)) xanh - ((thanh trung) OR (thanh tung)) cap thang luong tai toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (theo chieu)) xanh - ((thanh trung) OR (thanh tung)) cap thang luong tai toan tap~".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (theo chieu)) xanh - ((thanh trung) OR (thanh tung)) cap thang luong tai toan tap*.