Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, nhung don, nhung lang
thong cong » trong cong, tong cong, thong thong
luong toan » luong thanh, truong toan, luong tai
hoc thieu » toc thieu, hoc hien
trinh vat » trinh van, trinh luat, sinh vat
hang cong » dang cong, hang nong, bang cong
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 xanh - hanh trinh vat ((((nhung cong) OR (hang cong))) or (thong cong)) luong toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh trinh vat ((((nhung cong) OR (hang cong))) OR (thong cong)) luong toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - hanh trinh vat ((((nhung cong) OR (hang cong))) or (thong cong)) luong toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh trinh vat ((((nhung cong) OR (hang cong))) or (thong cong)) luong toan cau*.