Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thu sach » tu sach, thuat sach, thuoc sach
cham duc » pham duc, cham soc, pham duy
va thanh » gia thanh, le thanh
sach ky » sac ky, sach y, sach ty
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
va chu » va che, va cau, va chi
chu te » chu de, chu tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ky nang xa hoi. hieu vu cham duc ((((va thanh) OR (va tinh))) or (ban thanh)) va chu te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang xa hoi. hieu vu cham duc ((((va thanh) OR (va tinh))) OR (ban thanh)) va chu te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky nang xa hoi. hieu vu cham duc ((((va thanh) OR (va tinh))) or (ban thanh)) va chu te".
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang xa hoi. hieu vu cham duc ((((va thanh) OR (va tinh))) or (ban thanh)) va chu te*.