Perhaps you should try some spelling variations:
cham xuc » cam xuc, chat xuc, cham soc
su sach » so sach, vu sach
nang xa » lang xa, nang ma, mang xa
hieu va » lieu va, hieu qua
va cham » va chat, va tham
van tai » von tai, van tuan
va hieu » van hieu, va hien, cao hieu
xuc va » duc va, tuc va, luc va
dieu » dien

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