Perhaps you should try some spelling variations:
cham xuc » cam xuc, chat xuc, cham soc
nang mai » nang ma, nang tai, lang mai
sach ky » sach y, sach ty, sach kem
nang xa » lang xa, nang ma, mang xa
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
va nang » van nang, da nang, cam nang
sac ky » cac ky, sai ky
xuc va » duc va, tuc va, luc va
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 ky) OR (sac ky)) ((nang xa) or (nang x)) hoi. hieu ve cham xuc va nang mai va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ky) OR (sac ky)) ((nang xa) OR (nang x)) hoi. hieu ve cham xuc va nang mai va thiet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach ky) OR (sac ky)) ((nang xa) or (nang x)) hoi. hieu ve cham xuc va nang mai va thiet".
• Adding a wildcard symbol may retrieve word variants: su ((sach ky) OR (sac ky)) ((nang xa) or (nang x)) hoi. hieu ve cham xuc va nang mai va thiet*.