Perhaps you should try some spelling variations:
thanh lap » thanh san, thanh hai, thanh van
toc sach » hoc sach, doc sach, thuoc sach
phan lap » phan dau
ve pham » vi pham, v pham, ve phan
hieu ve » hieu va, hieu van
sach ky » sac ky, sach y, sach ty
tay hoi » tay ho, tay thai
tao hoi » tao khoi, tao boi, thao hoc
ky sang » ky nang, ky dang, ky tang
cua te » cua tu

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

• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky sang ((tao hoi) OR (tay hoi)). hieu ve pham duc va ((thanh lap) OR (phan lap)) cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ky sang ((tao hoi) OR (tay hoi)). hieu ve pham duc va ((thanh lap) or (phan lap)) cua te~".
• Adding a wildcard symbol may retrieve word variants: toc sach ky sang ((tao hoi) OR (tay hoi)). hieu ve pham duc va ((thanh lap) or (phan lap)) cua te*.