Perhaps you should try some spelling variations:
canh tran » canh tranh, hanh trang, banh trang
hang cong » dang cong, hang nong, bang cong
doan phan » doanh phan, toan phan, dan phan
chi xanh » chi anh, chi danh, chi hanh
tran van » luan van
phan lap » phan dau
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chi xanh - canh tran van ((hang cong) or (dung trong)) doan phan lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi xanh - canh tran van ((hang cong) OR (dung trong)) doan phan lap*.