Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
tranh hang » trinh han, tran hoang, tran hong
hoc thieu » toc thieu, hoc hien
hang khoa » dung khoa
khoa hang » khoa dang, khoai lang, kho tang
hang cong » dang cong, hang nong, bang cong
cong dan » cong san, cong tan, huong dan
chan cau » phan cau, chinh cau, nhanh cau
can cau » van cau, ban cau, ca cau

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 - tranh hang khoa hang cong dan ((chan cau) or (can cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - tranh hang khoa hang cong dan ((chan cau) OR (can cau)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - tranh hang khoa hang cong dan ((chan cau) or (can cau))*.