Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
so sach » so sanh, bo sach, co sach
te sach » toc sach
nang xa » nang x, lang xa, nang ma
va cham » va chat, va tham
va hanh » van hanh, va thanh, va danh
soc va » hoc va, loc va, doc va
tai va » thai va, mai va, tri 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: ((so sach) or (te sach)) ky nang xa hoi. lieu va cham soc va hanh tai va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (te sach)) ky nang xa hoi. lieu va cham soc va hanh tai va thiet.
• Adding a wildcard symbol may retrieve word variants: ((so sach) or (te sach)) ky nang xa hoi. lieu va cham soc va hanh tai va thiet*.