Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
va thanh » gia thanh, ban thanh, va tinh
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
vai cua » dai cua, hai cua, lai cua
nang ma » tang ma, sang ma, nang cao
ve cac » vien cac
ve cai » va cai, ve tai, ve cau
luc va » duc va, tuc va, loc va
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 cac)) luc va thanh vai 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 cac)) luc va thanh vai cua vat.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang ma hoi. hieu ((((ve cac) or (ve cai))) or (va cac)) luc va thanh vai cua vat*.