Perhaps you should try some spelling variations:
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
va kham » va cham, va tham, vu kham
truc ca » truc cau, truc va, truc cu
dan dai » dat dai, can dai, dan dat
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa
ca dan » cac dan, ca dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang ma hoi. hieu ((va kham) or (va khao)) truc ca dan dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ma hoi. hieu ((va kham) OR (va khao)) truc ca dan dai cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ma hoi. hieu ((va kham) or (va khao)) truc ca dan dai cua tre*.