Perhaps you should try some spelling variations:
nhung tuong » nhung huong, nhung phuong, hung vuong
tuong doan » tuong dan, trong doanh, phuong doan
hieu lang » chieu sang, hieu quang, nhieu tang
doi hieu » doi chieu, doc hieu, doi hien
manh cua » doanh cua
doan van » doan va, hoang van, luan van
ban cua » ban quan

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi hieu lang - hanh ((manh cua) OR (ban cua)) nhung tuong doan van ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi hieu lang - hanh ((manh cua) OR (ban cua)) nhung tuong doan van ban".
• Adding a wildcard symbol may retrieve word variants: doi hieu lang - hanh ((manh cua) OR (ban cua)) nhung tuong doan van ban*.