Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
doi chieu » doc hieu, doi chi, mot chieu
hanh cong » thanh cong, hang cong, hanh dong
cong phan » cong nhan, cong khan, chong phap
phan sinh » phan slinh, nhan sinh, phau sinh
sinh cong » minh cong, trinh cong, chinh cong
thanh van » thanh san, thanh toan, thanh phan
van chat » cao chat

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) or (toc thieu)) sach - hanh cong phan sinh cong thanh van chat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (toc thieu)) sach - hanh cong phan sinh cong thanh van chat*.