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