Perhaps you should try some spelling variations:
cham xuc » cam xuc, chat xuc, cham soc
su sach » so sach, vu sach
va cham » va chat, va tham
sach ty » sach y, sach tu, sach thu
hieu va » lieu va, hieu qua
nang xa » lang xa, nang ma, mang xa
xuc va » duc va, tuc va, luc va
va han » va phan, van han, va hanh
tai va » thai va, tri va, dai va
thiet » thieu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty ((nang xa) OR (nang x)) hoi. hieu va cham xuc va han ((tai va) OR (mai va)) thiet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty ((nang xa) or (nang x)) hoi. hieu va cham xuc va han ((tai va) OR (mai va)) thiet~".
• Adding a wildcard symbol may retrieve word variants: su sach ty ((nang xa) or (nang x)) hoi. hieu va cham xuc va han ((tai va) OR (mai va)) thiet*.