Perhaps you should try some spelling variations:
ban hanh » ban hang
cay phoi » cap phoi, tay hoi, cay cho
hieu ve » hieu va, hieu van
vai cua » dai cua, hai cua, lai cua
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
xay hoi » xa hoi, tay hoi, gay thoi
ky dang » ky nang, ky danh
ve cam » ve cham, ve cac, va cam
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: su sach ky dang ((xay hoi) OR (cay phoi)). hieu ve cam xuc ((van ban) or (ban hanh)) vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky dang ((xay hoi) OR (cay phoi)). hieu ve cam xuc ((van ban) OR (ban hanh)) vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky dang ((xay hoi) OR (cay phoi)). hieu ve cam xuc ((van ban) or (ban hanh)) vai cua te".
• Adding a wildcard symbol may retrieve word variants: su sach ky dang ((xay hoi) OR (cay phoi)). hieu ve cam xuc ((van ban) or (ban hanh)) vai cua te*.