Perhaps you should try some spelling variations:
kham cuoc » khac cuoc, khuat cuoc, nhan cuoc
cuoc van » cuoi van, luoc van, quoc van
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
hanh di » hanh de, hang di, danh di
hieu va » lieu va, hieu qua
hieu vu » hieu ve, hieu su, dieu vu
nang xa » nang x, lang xa, nang ma
cua te » cua tu

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 ky nang xa hoi. ((hieu vu) or (hieu va)) kham cuoc van ((hanh di) OR (hanh vi)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. ((hieu vu) OR (hieu va)) kham cuoc van ((hanh di) OR (hanh vi)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang xa hoi. ((hieu vu) or (hieu va)) kham cuoc van ((hanh di) OR (hanh vi)) cua te".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. ((hieu vu) or (hieu va)) kham cuoc van ((hanh di) OR (hanh vi)) cua te*.