Perhaps you should try some spelling variations:
thanh tung » thanh cong
hien sach » kien sach, thien hach, chieu sach
dien sach » dien anh
cach dung » sach dung, cach mang, tac dung
chan dung » van dung, dan dung
trong san » trong cac, cong san, dong san
san khau » san pham, san khoa, san phu
khau cap » khan cap, khau cao, khau tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hien sach) or (dien sach)) - thanh tung ((cach dung) or (chan dung)) trong san khau cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien sach) OR (dien sach)) - thanh tung ((cach dung) OR (chan dung)) trong san khau cap.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien sach) or (dien sach)) - thanh tung ((cach dung) or (chan dung)) trong san khau cap*.