Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
canh trinh » canh tranh, hanh trinh, canh tinh
trinh xuat » trinh luat, trinh xuan, trich xuat
xuat thong » xuat thuong, suat thong, luat thuong
hoc thieu » toc thieu, hoc hien
van toan » van tuan, van tan, van thanh

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 trinh xuat thong thong ((tinh toan) or (van toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - canh trinh xuat thong thong ((tinh toan) OR (van toan)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - canh trinh xuat thong thong ((tinh toan) or (van toan)) cau*.