Perhaps you should try some spelling variations:
lanh manh » lanh tranh, lan anh, van manh
doc dieu » doc hieu, hoc dieu, soc dieu
cua dang » cua cong, cua ban
qua dung » quang dung, su dung, qua song
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
than man » than ma, thanh san, tran manh

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc dieu hanh - lanh manh ((cua dang) OR (qua dung)) ((cong dan) OR (cong tan)) than man~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc dieu hanh - lanh manh ((cua dang) OR (qua dung)) ((cong dan) OR (cong tan)) than man".
• Adding a wildcard symbol may retrieve word variants: doc dieu hanh - lanh manh ((cua dang) OR (qua dung)) ((cong dan) OR (cong tan)) than man*.