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 cham » va chat, va tham
va hanh » van hanh, va thanh, va danh
ve cac » va cac, vien cac
va cam » va cac, va cao, va cai
luc va » duc va, tuc va, loc va
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: te sach ky nang ma hoa. hieu ((ve cac) or (((va cam) or (va cham)))) luc va hanh vi cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ma hoa. hieu ((ve cac) OR (((va cam) OR (va cham)))) luc va hanh vi cua vat.
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ma hoa. hieu ((ve cac) or (((va cam) or (va cham)))) luc va hanh vi cua vat*.