Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh van
thanh hai » thanh phan, thanh hoa, thanh san
toc sach » hoc sach, doc sach, thuoc sach
tao khoi » thao khoa, lao khoa, tao boi
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
sach ky » sac ky, sach y, sach ty
tao hoi » tao boi, tay hoi, 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.

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