Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
canh trang » canh tranh, hanh trang, banh trang
hoc thieu » toc thieu, hoc hien
hang cong » hang nong, bang cong, thanh cong
dang cong » dung cong
trang va » tran van, hang va
tac phan » tac pham, tai phan, tac phat
phan dau » phan tu, hang dau

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