Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
cham tuc » nham thuc, pham thuc, tham thuc
va thanh » gia thanh, va tinh, le thanh
hoc sac » hoc sach, hoc cac, hoc mac
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va cham » va chat, va tham
cua tre » cuu tre, cua triet, dua tren
sac ky » cac ky, sai ky
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: hoc sac ky nang xa hoi. hieu va cham tuc ((va thanh) OR (ban thanh)) vai ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sac ky nang xa hoi. hieu va cham tuc ((va thanh) OR (ban thanh)) vai ((cua tre) OR (cua te))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sac ky nang xa hoi. hieu va cham tuc ((va thanh) OR (ban thanh)) vai ((cua tre) or (cua te))*".