Perhaps you should try some spelling variations:
thien quan » trien quang, lien quan, thien van
hieu lang » chieu sang, hieu quang, nhieu tang
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
cua nhung » va nhung
tinh cua » trinh cua, sinh cua, tinh chat
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: hoi ((hieu lang) or (thien quan)) - hanh tinh cua nhung ((cong dan) OR (cong tan)) than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoi ((hieu lang) OR (thien quan)) - hanh tinh cua nhung ((cong dan) OR (cong tan)) than cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoi ((hieu lang) or (thien quan)) - hanh tinh cua nhung ((cong dan) OR (cong tan)) than cao".
• Adding a wildcard symbol may retrieve word variants: hoi ((hieu lang) or (thien quan)) - hanh tinh cua nhung ((cong dan) OR (cong tan)) than cao*.