Perhaps you should try some spelling variations:
quang nhung » quang hung, quan nhung, quang phuong
doanh tran » doanh tren, doanh thanh, doanh trong
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
nhanh bac » nhanh ha, nhanh va
hoc hieu » hoc thieu, hoc hien, doc hieu
cong ban » cong bang, cong san, cong tan
hanh cac » hang cac, hanh cat, hanh cham

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu lang - doanh tran quang nhung cong ban ((hanh cac) or (nhanh bac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu lang - doanh tran quang nhung cong ban ((hanh cac) OR (nhanh bac)).
• Adding a wildcard symbol may retrieve word variants: hoc hieu lang - doanh tran quang nhung cong ban ((hanh cac) or (nhanh bac))*.