Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
thong cong » trong cong, tong cong, thong thong
luong toan » luong thanh, truong toan, luong tai
hoc thieu » hoc hien
trinh vat » trinh van, trinh luat, sinh vat
nhung don » nhung van, nhung bo
toan ban » van ban

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) or (toc thieu)) xanh - hanh trinh vat ((nhung don) or (thong cong)) luong toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (toc thieu)) xanh - hanh trinh vat ((nhung don) OR (thong cong)) luong toan ban.
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (toc thieu)) xanh - hanh trinh vat ((nhung don) or (thong cong)) luong toan ban*.