Perhaps you should try some spelling variations:
doi chieu » doc hieu, doi chi, mot chieu
lang cong » dang cong, bang cong, hang cong
cong van » cong vang, cong san, song van
van phat » va phat, van chat, van phan
phat lap » phan lap, phap lap, phat lam
cong tu » cong ty, cong cu, dong tu
tu lang » cu lang, tu lanh, xu lang

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