Perhaps you should try some spelling variations:
nhung duong » nhung dung, nhung huong, nhung tuong
chiet tach » chieu sach
duong sinh » duong minh, duong manh, trong sinh
doi chiet » doi chieu, doi chi, doi viet
tranh cua » doanh cua, manh cua
cua nhung » va nhung
sinh van » sinh vat, dinh van, sinh va

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chiet tach - canh tranh cua nhung duong sinh van ban~.
• Adding a wildcard symbol may retrieve word variants: doi chiet tach - canh tranh cua nhung duong sinh van ban*.