Perhaps you should try some spelling variations:
nhuong cong » nhung cong, luong cong, duong cong
trinh van » trinh han, trinh quan, trinh toan
chi xanh » chi anh, chi danh, chi hanh
tran van » luan van
cong tan » cong tac, cong san, cong thanh
doi chi » doi khi
tan pho » tuan pho, dan pho, ban pho
pho da » pho ha

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 ((trinh van) or (tran van)) nhuong cong tan pho da~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chi xanh - canh ((trinh van) OR (tran van)) nhuong cong tan pho da.
• Adding a wildcard symbol may retrieve word variants: doi chi xanh - canh ((trinh van) or (tran van)) nhuong cong tan pho da*.