Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
sach gian » sach giao, sach han, sach tien
trong khi » trong thi, trong khu, trong thoi
sach kha » sach nha, sach ha, sach tham
kha dung » khoa dung, khao dung, nha dung
su sach » so sach, vu sach
dung ha » dung va, dung he, dung khoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( su sach kha dung ha đong luc ) or ( thuat sach gian trong khi đong luc ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( su sach kha dung ha đong luc ) OR ( thuat sach gian trong khi đong luc )).
• Adding a wildcard symbol may retrieve word variants: (( su sach kha dung ha đong luc ) or ( thuat sach gian trong khi đong luc ))*.