Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
thong cong » trong cong, tong cong, thong thong
hoc thieu » toc thieu, hoc hien
canh manh » lanh manh, canh tranh, cach mang
nhung don » nhung van, nhung bo
manh cua » doanh cua, ban cua
phan cau » phan cac, phan tu, phan lap
phan dau » phan tu, hang dau

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 - canh manh cua ((nhung don) or (thong cong)) san ((phan cau) OR (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - canh manh cua ((nhung don) OR (thong cong)) san ((phan cau) OR (phan dau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - canh manh cua ((nhung don) or (thong cong)) san ((phan cau) OR (phan dau))".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - canh manh cua ((nhung don) or (thong cong)) san ((phan cau) OR (phan dau))*.