Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh tranh » canh tranh, hanh trinh, hanh trang
hoc thieu » toc thieu, hoc hien
tranh cua » doanh cua, manh cua
dung cong » dung trong
cua dung » cua dang, cua dong, qua dung
dan than » ban than, van than, dang thanh
dan toan » van toan, manh toan, xuan toan
dan chan » dan gian, dan ca, van chat

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 - hanh tranh cua dung cong ((((dan than) OR (dan toan))) or (dan chan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh tranh cua dung cong ((((dan than) OR (dan toan))) OR (dan chan)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - hanh tranh cua dung cong ((((dan than) OR (dan toan))) or (dan chan)) cau".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh tranh cua dung cong ((((dan than) OR (dan toan))) or (dan chan)) cau*.