Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
van hang » van khang, van hoang, van thang
ve triet » va trien, su triet
ky lang » ky dang, ky tang, tay lang
hieu ve » hieu va, hieu van
cac xuc » cam xuc, cac nuoc, chat xuc
xuc van » duc van, luc van, vuc van
hang ki » hang di, hang ke, hang vi
ve cac » va cac, vien cac
ki ve » ke ve, gi ve, vi ve

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 ((ky lang) or (ky nang)) xa hoi. hieu ve cac xuc van hang ki ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((ky lang) OR (ky nang)) xa hoi. hieu ve cac xuc van hang ki ve triet*.