Perhaps you should try some spelling variations:
kinh dai » sinh dai, kinh dao, kinh hai
tu sach » thu sach, te sach, tu cach
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
va chat » van chat, cao chat, hoa chat
va kinh » va tinh, qua kinh
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc va

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 (su sach)) ky nang xa hoi. lieu ((va chat) or (va phat)) xuc va kinh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ky nang xa hoi. lieu ((va chat) OR (va phat)) xuc va kinh dai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (su sach)) ky nang xa hoi. lieu ((va chat) or (va phat)) xuc va kinh dai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (su sach)) ky nang xa hoi. lieu ((va chat) or (va phat)) xuc va kinh dai cua tre*.