Perhaps you should try some spelling variations:
nhan tai » hang tai, van tai, toan tai
cham xuc » cam xuc, chat xuc, cham soc
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
han tai » hang tai, van tai, toan tai
hieu ve » hieu va, hieu van
tang xa » trang xa, tang ma, lang xa
ky tang » ky nang, ky dang, kho tang
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: tu sach ky tang xa hoi. ((hieu ve) or (lieu va)) cham xuc va ((han tai) or (nhan tai)) va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky tang xa hoi. ((hieu ve) OR (lieu va)) cham xuc va ((han tai) OR (nhan tai)) va thiet.
• Adding a wildcard symbol may retrieve word variants: tu sach ky tang xa hoi. ((hieu ve) or (lieu va)) cham xuc va ((han tai) or (nhan tai)) va thiet*.