Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh trang » thanh trung, canh tranh, hanh trinh
hoc thieu » toc thieu, hoc hien
nang cong » nang song, dang cong, bang cong
bang song » nang song
trang va » tran van, hang va
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

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 trang va ((nang cong) or (bang song)) dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh trang va ((nang cong) OR (bang song)) dan than cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh trang va ((nang cong) or (bang song)) dan than cau*.