Perhaps you should try some spelling variations:
nhanh thanh » phan thanh, nhanh tinh
hieu quang » thieu quang, hieu qua, diep quang
hieu quan » hieu qua, lieu quan, thien quan
hanh tran » hanh trang, thanh tran, hanh tram
hang nong » thang long, han tong
ban thanh » ban hanh, ban hang
tran van » luan van
van hang » van khang, van hoang, van thang

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

• Performing a fuzzy search may retrieve terms with similar spellings: moi ((hieu quang) OR (hieu quan)) - hanh tran van hang nong ((nhanh thanh) or (ban thanh)) cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: moi ((hieu quang) OR (hieu quan)) - hanh tran van hang nong ((nhanh thanh) OR (ban thanh)) cac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "moi ((hieu quang) OR (hieu quan)) - hanh tran van hang nong ((nhanh thanh) or (ban thanh)) cac".
• Adding a wildcard symbol may retrieve word variants: moi ((hieu quang) OR (hieu quan)) - hanh tran van hang nong ((nhanh thanh) or (ban thanh)) cac*.