Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, ban thanh, va tinh
mang cua » manh cua, dung cua, ban cua
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nam duc » nam duoc, pham duc, nam thuc
van cua » vang cua, ban cua, dan cua
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 van nam duc va thanh ((van cua) or (mang cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang x hoi. hieu van nam duc va thanh ((van cua) OR (mang cua)) te.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang x hoi. hieu van nam duc va thanh ((van cua) or (mang cua)) te*.