Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
van hang » van khang, van hoang, van thang
nang xa » lang xa, nang ma, mang xa
hieu ve » hieu va, hieu van
xuc van » duc van, luc van, xuc ban
hang ki » hang di, hang ke, hang vi
su tien » su kien, su hien, tu tieng
ve cam » ve cham, ve cac, va cam
ki su » ky su

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach y ((nang xa) or (nang x)) hoi. hieu ve cam xuc van hang ki su tien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y ((nang xa) OR (nang x)) hoi. hieu ve cam xuc van hang ki su tien*.