Perhaps you should try some spelling variations:
hanh trinh » canh tranh
doi chieu » doc hieu, ho chieu, mot chieu
dung cong » dung trong
han dung » chan dung, han duong, hanh dung
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
chan ban » can ban, chat ban, chan nan
doi chi » doi khi

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

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