Perhaps you should try some spelling variations:
hieu quang » thieu quang, hieu quan, hieu qua
hanh tranh » canh tranh, hanh trinh, hanh trang
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, nhieu tang, biet lang
tranh cua » doanh cua, manh cua
cua nhung » va nhung
hieu van » hieu va, thien van, lieu va
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
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 (hieu van))) or (hieu quang)) - hanh tranh cua nhung cong dan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoi ((((hieu lang) OR (hieu van))) OR (hieu quang)) - hanh tranh cua nhung cong dan than cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoi ((((hieu lang) OR (hieu van))) or (hieu quang)) - hanh tranh cua nhung cong dan than cao".
• Adding a wildcard symbol may retrieve word variants: hoi ((((hieu lang) OR (hieu van))) or (hieu quang)) - hanh tranh cua nhung cong dan than cao*.