Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
hanh hang » thanh hang, hanh han, hanh mang
hang hang » nang hang, cang thang, hung thang
bang cong » dang cong, bang song, hang cong
cong san » cong tac
than cao » toan cao, thai cao, than sao
than cap » khan cap, thanh lap, thanh cac
va bang » va nang, va lang, va 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 hang) or (hang hang)) va bang cong san ((than cao) or (than cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - ((hanh hang) OR (hang hang)) va bang cong san ((than cao) OR (than cap)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - ((hanh hang) or (hang hang)) va bang cong san ((than cao) or (than cap))*.