Perhaps you should try some spelling variations:
nhung tuong » nhung huong, nhung phuong, hung vuong
chau tinh » cuu tinh, ha tinh, cua tinh
canh tran » canh tranh, hanh trang, banh trang
van nhung » van nhuong, va nhung, van hung
tuong dan » huong dan, tung dan, xuong dan
cua sinh » hoa sinh, va sinh
tran van » luan van
dan khan » dan khanh, dan chan, dan than
khan cap » khan ap, than cap, khoan cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((chau tinh) or (cua sinh)) - canh tran van nhung tuong dan khan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((chau tinh) OR (cua sinh)) - canh tran van nhung tuong dan khan cap.
• Adding a wildcard symbol may retrieve word variants: doc ((chau tinh) or (cua sinh)) - canh tran van nhung tuong dan khan cap*.