Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
cong toan » cong tan, cong hoan, cong tuan
toan phan » thanh phan, toan ban, hoa phan
van hang » van khang, van hoang, van thang
phan dau » phan tu, hang dau
va hang » va nang, va lang, va hanh

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 tranh ((va hang) OR (van hang)) cong toan phan dau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - canh tranh ((va hang) OR (van hang)) cong toan phan dau".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - canh tranh ((va hang) OR (van hang)) cong toan phan dau*.