Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
luong toan » luong thanh, truong toan, luong tai
hoc thieu » toc thieu
trinh vat » trinh van, trinh luat, sinh vat
tong cong » trong cong, dung cong, dang cong
cong cong » cong dong, trong cong, dung cong
toan ban » van 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: ((hoc thieu) OR (hoc hien)) xanh - hanh trinh vat ((tong cong) OR (cong cong)) luong toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (hoc hien)) xanh - hanh trinh vat ((tong cong) OR (cong cong)) luong toan ban~".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (hoc hien)) xanh - hanh trinh vat ((tong cong) OR (cong cong)) luong toan ban*.