Perhaps you should try some spelling variations:
hieu quang » thieu quang, hieu quan, hieu qua
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, nhieu tang, hieu van
trinh cua » tinh cua, trinh luat, trinh quan
cua nhung » va nhung
san van » tan van, tran van, dang van
luan » quan, lan

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

• Performing a fuzzy search may retrieve terms with similar spellings: nho ((hieu lang) or (hieu quang)) - hanh trinh cua nhung cong ((san van) or (luan van)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nho ((hieu lang) OR (hieu quang)) - hanh trinh cua nhung cong ((san van) OR (luan van)) ban.
• Adding a wildcard symbol may retrieve word variants: nho ((hieu lang) or (hieu quang)) - hanh trinh cua nhung cong ((san van) or (luan van)) ban*.