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
trinh van » trinh han, trinh quan, trinh toan
hang cong » dang cong, hang nong, bang cong
van hang » van khang, van hoang, van thang
cong san » cong tac
toan cao » toan ban, toan tap
phan dau » phan tu, hang dau
phan cac » nhan cach, phan lap, phan van

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 hang cong san ((((toan cao) or (phan dau))) or (phan cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - canh trinh van hang cong san ((((toan cao) OR (phan dau))) OR (phan cac)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - canh trinh van hang cong san ((((toan cao) or (phan dau))) or (phan cac))*.