Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
may nang » may nong, ky nang, cam nang
van hanh » van thanh, ban hanh, van anh
phat xuc » chat xuc, phat xuat, phap xu
tu sach » thu sach, su sach, te sach
cua tre » cua te, cuu tre, cua triet
co hoi » co hoc, co loi
v nang » va nang, vu nang, van nang
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ((may nang) or (v nang)) co hoi. lieu va phat xuc ((van hanh) or (ban thanh)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((may nang) OR (v nang)) co hoi. lieu va phat xuc ((van hanh) OR (ban thanh)) vi cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ((may nang) or (v nang)) co hoi. lieu va phat xuc ((van hanh) or (ban thanh)) vi cua tre*.