Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
van hang » van khang, van hoang, van thang
su triet » su viet, su tien, ve triet
hieu va » lieu va, hieu qua
hieu ve » hieu van
xuc van » duc van, luc van, xuc ban
nang xa » lang xa, nang ma, mang xa
hang ki » hang di, hang ke, hang vi
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) OR (hieu va)) cam xuc van hang ki su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y ((nang xa) OR (nang x)) hoi. ((hieu ve) OR (hieu va)) cam xuc van hang ki su triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach y ((nang xa) or (nang x)) hoi. ((hieu ve) OR (hieu va)) cam xuc van hang ki su triet*".