Perhaps you should try some spelling variations:
thanh lap » thanh san, phan lap, thanh hai
toc sach » hoc sach, doc sach, thuoc sach
tao hoi » tao khoi, tao boi, tay hoi
hieu va » lieu va, hieu qua
va pham » van pham, va phat, va phap
duc gia » quoc gia
y nang » ky nang, ly nang, may nang
v nang » va nang, vu nang, van nang
cua tu » cua tuc, cua su, cua cu

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 ((y nang) OR (v nang)) tao hoi. hieu va pham duc gia thanh lap ((cua te) OR (cua tu))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ((y nang) OR (v nang)) tao hoi. hieu va pham duc gia thanh lap ((cua te) or (cua tu))~".
• Adding a wildcard symbol may retrieve word variants: toc sach ((y nang) OR (v nang)) tao hoi. hieu va pham duc gia thanh lap ((cua te) or (cua tu))*.