Perhaps you should try some spelling variations:
cham xuc » cam xuc, chat xuc, cham soc
van hanh » van thanh, ban hanh, van anh
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
va cham » va chat, va tham
va tinh » may tinh
nang o » nang co, nang ho, nang ro
vai va » mai va, dai va, hai va
o hoi » co hoi, o hoc, o hai
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 ty nang o hoi. lieu va cham xuc ((va tinh) or (van hanh)) ((tu va) or (vai va)) thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang o hoi. lieu va cham xuc ((va tinh) OR (van hanh)) ((tu va) OR (vai va)) thiet.
• Adding a wildcard symbol may retrieve word variants: su sach ty nang o hoi. lieu va cham xuc ((va tinh) or (van hanh)) ((tu va) or (vai va)) thiet*.