Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
tu sach » thu sach, su sach, tu cach
te sach » toc sach
nang xa » nang x, lang xa, nang ma
va cham » va chat, va tham
xuc va » duc va, tuc va, xac va
luc va » duc va, tuc va, loc 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: ((tu sach) or (te sach)) ky nang xa hoi. lieu va cham ((xuc va) OR (luc va)) hanh tai va thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ky nang xa hoi. lieu va cham ((xuc va) OR (luc va)) hanh tai va thiet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (te sach)) ky nang xa hoi. lieu va cham ((xuc va) OR (luc va)) hanh tai va thiet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) ky nang xa hoi. lieu va cham ((xuc va) OR (luc va)) hanh tai va thiet*.