Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
tu sach » thu sach, su sach, te sach
luc gia » luoc gia, duc gia, quoc gia
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
vai cua » dai cua, hai cua, lai cua
ve cai » va cai, ve cac, ve tai
va cao » va cac, va co, va dao
ma hoi » mai hoi, ma hoa, me hoi

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 ty nang ((ma hoi) or (xa hoi)). hieu ((ve cai) or (va cao)) luc gia thanh vai cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang ((ma hoi) OR (xa hoi)). hieu ((ve cai) OR (va cao)) luc gia thanh vai cua vat.
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang ((ma hoi) or (xa hoi)). hieu ((ve cai) or (va cao)) luc gia thanh vai cua vat*.