Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hoc chieu » hoc thieu, ho chieu, hoc dieu
trinh lan » trinh luan, trinh han, trinh san
lan dung » van dung, dan dung, lan hung
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
than ban » thanh ban, toan ban, than man

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc chieu) or (hoc hien)) xanh - hanh trinh lan dung ((cong dan) OR (cong tan)) than ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chieu) OR (hoc hien)) xanh - hanh trinh lan dung ((cong dan) OR (cong tan)) than ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc chieu) or (hoc hien)) xanh - hanh trinh lan dung ((cong dan) OR (cong tan)) than ban".
• Adding a wildcard symbol may retrieve word variants: ((hoc chieu) or (hoc hien)) xanh - hanh trinh lan dung ((cong dan) OR (cong tan)) than ban*.