Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
canh trinh » canh tranh, hanh trinh, canh tinh
hoc thieu » toc thieu, hoc hien
cong vang » cong lang, cong quang, cong ngang
vang than » sang than, van than, cang thang
van hung » manh hung, van duong, van dong
van dung » van dong, xay dung, tin dung
than cao » toan cao, thai cao, 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 - canh trinh ((van hung) or (van dung)) cong vang than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - canh trinh ((van hung) OR (van dung)) cong vang than cao*.