Perhaps you should try some spelling variations:
thanh thi » thanh tai, nhanh thi, thanh tri
hieu sach » chieu sach, hieu cach, dien sach
bang cong » dang cong, bang song, hang cong
cong hung » cong chung, cong huong, cong dung
thi bang » thai bang, thi nang, thi hang
hung dan » huong dan, dung dan, tung dan
dan phan » doan phan, dan chan, van phan
phan tap » phan lap, han tap, pha tap
hieu ca » hieu cac, hieu cua, hieu va

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((hieu sach) or (hieu ca)) - thanh thi bang cong hung dan phan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu sach) OR (hieu ca)) - thanh thi bang cong hung dan phan tap*.