Perhaps you should try some spelling variations:
cham xuc » cam xuc, chat xuc, cham soc
hang tai » hang va, dung tai
su sach » so sach, vu sach
han tai » nhan tai, van tai, toan tai
xuc van » duc van, luc van, vuc van
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
nang xa » lang xa, nang ma, mang xa
thiet » thieu

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