Perhaps you should try some spelling variations:
cong hung » cong chung, cong huong, cong dung
ho chieu » theo chieu, hoc thieu, mot chieu
cong phi » cong khi, cong chi, cong phu
phi cong » thi cong, phan cong, pham cong
hung dan » huong dan, dung dan, tung dan
dan khan » dan khanh, dan chan, dan than
khan ap » khan cap, han ap, khan dam

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 phi cong hung dan khan ap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (toc thieu)) sach - thanh cong phi cong hung dan khan ap*.