Perhaps you should try some spelling variations:
khong cong » thong cong, khong cang, chong cong
chu khong » he khong, thi khong, chu trong
cong nang » cong ngang, cong lang, cong nong
nang phan » nang phat, nang thanh, nang quan
ho chieu » theo chieu, hoc thieu, mot chieu
cong chu » cong chuc, cong chua, cong cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (toc thieu)) sach - thanh cong chu khong cong nang phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (toc thieu)) sach - thanh cong chu khong cong nang phan tu.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (toc thieu)) sach - thanh cong chu khong cong nang phan tu*.