Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
tu cach » tu cac
va cham » va chat
tinh vi » trinh vi, tinh voi, tinh va
va tinh » may tinh
cua tre » cua te, cuu tre, cua triet
va tham » van tham, va thanh, va thuat
nang xa » nang x, lang xa, nang ma
tuc va » thuc va, truc va, tuc xa
vi cua » vai cua, di cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (thuoc sach)) ky nang xa hoi. lieu ((va tham) OR (va cham)) tuc va tinh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (thuoc sach)) ky nang xa hoi. lieu ((va tham) OR (va cham)) tuc va tinh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cach) or (thuoc sach)) ky nang xa hoi. lieu ((va tham) OR (va cham)) tuc va tinh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (thuoc sach)) ky nang xa hoi. lieu ((va tham) OR (va cham)) tuc va tinh vi cua tre*.