Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thu sach » tu sach, thuat sach, thuoc sach
dang xay » dang van, van xay
thanh vi » hanh vi, thanh va, thanh ve
vu sach » vu bach, su sach, vu khach
ky dang » ky nang, ky danh
xay hoi » xa hoi, tay hoi, cay phoi
hieu ve » hieu va, hieu van
vi cua » vai cua, di cua
cam oc » cao oc
cua te » cua tu
cam o » cham o, cam lo, ca o

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu sach) or (thu sach)) ky dang xay hoi. hieu ve ((cam oc) or (cam o)) ban thanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (thu sach)) ky dang xay hoi. hieu ve ((cam oc) OR (cam o)) ban thanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (thu sach)) ky dang xay hoi. hieu ve ((cam oc) or (cam o)) ban thanh vi cua te*.