Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
hieu quang » thieu quang, hieu qua, diep quang
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, nhieu tang, hieu van
hieu quan » hieu qua, lieu quan, thien quan
trang va » tran van, hang va
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
chan cao » chan cho, chat cao, chay cao

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 quang) OR (hieu quan)))) - hanh trang va nhung cong dan chan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoi ((hieu lang) OR (((hieu quang) OR (hieu quan)))) - hanh trang va nhung cong dan chan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoi ((hieu lang) or (((hieu quang) OR (hieu quan)))) - hanh trang va nhung cong dan chan cao".
• Adding a wildcard symbol may retrieve word variants: hoi ((hieu lang) or (((hieu quang) OR (hieu quan)))) - hanh trang va nhung cong dan chan cao*.