Perhaps you should try some spelling variations:
chieu quan » hieu quan, thieu quang, hieu qua
thanh tung » thanh cong
trinh han » trinh quan
ho chieu » theo chieu, hoc thieu, doi chieu
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
than cao » toan cao, thai cao, than cap

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

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