Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, hang cong, nhung don
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
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: ((hoc thieu) OR (toc thieu)) xanh - hanh trinh vat ((nhung cong) or (thong cong)) luong toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (toc thieu)) xanh - hanh trinh vat ((nhung cong) OR (thong cong)) luong toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) OR (toc thieu)) xanh - hanh trinh vat ((nhung cong) or (thong cong)) luong toan cau".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) OR (toc thieu)) xanh - hanh trinh vat ((nhung cong) or (thong cong)) luong toan cau*.