Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
canh trinh » hanh trinh, canh tinh, anh trinh
hoc thieu » toc thieu, hoc hien
van nhung » van nhuong, va nhung, van hung
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
tru » truc

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) OR (canh tranh)) van nhung ((cong dan) or (cong san)) ca tru~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - ((canh trinh) OR (canh tranh)) van nhung ((cong dan) OR (cong san)) ca tru.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - ((canh trinh) OR (canh tranh)) van nhung ((cong dan) or (cong san)) ca tru".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - ((canh trinh) OR (canh tranh)) van nhung ((cong dan) or (cong san)) ca tru*.