Perhaps you should try some spelling variations:
thanh tung » thanh cong
hoc thieu » toc thieu, hoc hien
doi chieu » doc hieu, doi chi, ho chieu
va trong » va truong, va thong, va tuong
cong ban » cong bang, cong san, cong tan
ban khan » ban than, ban nhan, ban chan
tung va » trung va, tuong va, dung va
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: ((hoc thieu) or (doi chieu)) sach - thanh tung va trong cong ban khan ap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (doi chieu)) sach - thanh tung va trong cong ban khan ap*.