Perhaps you should try some spelling variations:
doi chieu » doc hieu, doi chi, mot chieu
lang cong » dang cong, bang cong, hang cong
cong phan » cong nhan, cong khan, chong phap
phan phat » phap phat, van phat, phan phoi
cong va » dong va, cong ha, cong tac
va lang » va nang, hoa lang
phat tu » phan tu, pham tu, phap tu

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 - thanh cong va lang cong phan phat tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (toc thieu)) sach - thanh cong va lang cong phan phat tu.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (toc thieu)) sach - thanh cong va lang cong phan phat tu*.