Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
cua dung » cua dong, qua dung, cua rung
cua dang » cua ban
cong ban » cong bang, cong san, cong tan
ban toan » bai toan, ban than, van toan
toan cao » toan ban, toan tap

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 ((cua dung) or (((cua dang) or (cua cong)))) cong ban toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - canh tranh ((cua dung) OR (((cua dang) OR (cua cong)))) cong ban toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - canh tranh ((cua dung) or (((cua dang) or (cua cong)))) cong ban toan cao*.