Perhaps you should try some spelling variations:
te sach » toc sach
sach ky » sac ky, sach y, sach ty
hanh ve » hanh vi, hanh va, hanh kem
hanh de » hanh kem
hanh le » thanh le, manh le, anh le
hau loc » huu loc, phau hoc
hieu va » lieu va, hieu qua
nang ma » tang ma, sang ma, nang cao
cua tre » cua te, cuu tre, cua triet
loc va » hoc va, luc va
va hau » van hau, va chau, vat hau
ma hoi » mai hoi, xa hoi, ma hoa

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 hau loc va ((hanh le) or (((hanh de) OR (hanh ve)))) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ma hoi. hieu va hau loc va ((hanh le) OR (((hanh de) OR (hanh ve)))) cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang ma hoi. hieu va hau loc va ((hanh le) or (((hanh de) OR (hanh ve)))) cua tre*".