Perhaps you should try some spelling variations:
cham duc » pham duc, cham soc, pham duy
tu sach » thu sach, te sach, tu cach
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
va tinh » may tinh
tinh va » tich va, trinh van, trinh vat
va chua » vua chua, ca chua, va chu
chua te » cua te, chua tu, chua xe

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. hieu vu cham duc va tinh va chua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (su sach)) ky nang xa hoi. hieu vu cham duc va tinh va chua te".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (su sach)) ky nang xa hoi. hieu vu cham duc va tinh va chua te*.