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, cong 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, dan cua, nan cua
ban cua » ban quan
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) OR (ban 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) OR (ban cua)))) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang x hoi. hieu van nam duc va thanh ((van cua) or (((mang cua) OR (ban 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) OR (ban cua)))) te*.