Perhaps you should try some spelling variations:
cham xuc » cam xuc, chat xuc, cham soc
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va cham » va chat, va tham
van han » van hanh, van phan, van nhan
va han » va phan, va hanh, va hang
tai va » thai va, mai va, tri 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 y) OR (cac ky)) nang xa hoi. hieu va cham xuc ((va han) OR (van han)) tai va thiet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach y) or (cac ky)) nang xa hoi. hieu va cham xuc ((va han) OR (van han)) tai va thiet~".
• Adding a wildcard symbol may retrieve word variants: su ((sach y) or (cac ky)) nang xa hoi. hieu va cham xuc ((va han) OR (van han)) tai va thiet*.