Perhaps you should try some spelling variations:
choc kinh » chuc kinh, cho sinh, luoc kinh
bang cong » dang cong, bang song, hang cong
hoc kinh » hoc sinh, luoc kinh
chinh va » chinh ta, chinh tai, hanh va
dan than » dan chan, van than, dan toan
ban than » ban thanh, van thanh, ban hang
va bang » va nang, va lang, va ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc kinh) or (choc kinh)) sach - hanh chinh va bang cong ((dan than) or (ban than)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc kinh) OR (choc kinh)) sach - hanh chinh va bang cong ((dan than) OR (ban than)) cao.
• Adding a wildcard symbol may retrieve word variants: ((hoc kinh) or (choc kinh)) sach - hanh chinh va bang cong ((dan than) or (ban than)) cao*.