Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
nang ma » tang ma, sang ma, nang cao
va hanh » van hanh, va thanh, va danh
sach ky » sac ky, sach y, sach ty
va cam » va cham, va cac, va cao
luc va » duc va, tuc va, loc va
vi cua » vai cua, di cua
ve cai » va cai, ve tai, ve cau
ve cac » va cac, vien cac
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: tu sach ky nang ma hoi. hieu ((((ve cac) or (ve cai))) or (va cam)) luc va hanh vi cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang ma hoi. hieu ((((ve cac) OR (ve cai))) OR (va cam)) luc va hanh vi cua vat.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang ma hoi. hieu ((((ve cac) or (ve cai))) or (va cam)) luc va hanh vi cua vat*.