Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
thanh co » thanh do, thanh ca, thanh ho
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
va cham » va chat, va tham
ve tai » te tai, de tai, le tai
va cam » va cac, va cao, va cai
co cua » con cua, ca cua, cong cua
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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 x hoi. hieu ((ve tai) or (((va cam) OR (va cham)))) duc va thanh co cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang x hoi. hieu ((ve tai) OR (((va cam) OR (va cham)))) duc va thanh co cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang x hoi. hieu ((ve tai) or (((va cam) OR (va cham)))) duc va thanh co cua te".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang x hoi. hieu ((ve tai) or (((va cam) OR (va cham)))) duc va thanh co cua te*.