Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thien van » thi van
va thanh » gia thanh, va tinh, le thanh
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
cam duc » cam xuc, cao duc, pham duc
ca cua » co cua
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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 ty nang x hoi. ((hieu qua) or (thien van)) cam duc ((va thanh) OR (ban thanh)) ca cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang x hoi. ((hieu qua) OR (thien van)) cam duc ((va thanh) OR (ban thanh)) ca cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty nang x hoi. ((hieu qua) or (thien van)) cam duc ((va thanh) OR (ban thanh)) ca cua te".
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang x hoi. ((hieu qua) or (thien van)) cam duc ((va thanh) OR (ban thanh)) ca cua te*.