Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
va thanh » gia thanh, ban thanh, va tinh
vu sach » vu bach, su sach, vu khach
cam loc » cam lo
ty danh » ty doanh, ty anh, te danh
vai cua » dai cua, hai cua, lai cua
ky danh » ky anh, ky dang
xay hoi » xa hoi, tay hoi, cay phoi
hieu ve » hieu van
hieu va » lieu va, hieu qua
cua te » cua tu
loc va » hoc va, luc va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ((ty danh) or (ky danh)) xay hoi. ((hieu ve) OR (hieu va)) cam loc va thanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ((ty danh) OR (ky danh)) xay hoi. ((hieu ve) OR (hieu va)) cam loc va thanh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ((ty danh) or (ky danh)) xay hoi. ((hieu ve) OR (hieu va)) cam loc va thanh vai cua te".
• Adding a wildcard symbol may retrieve word variants: vu sach ((ty danh) or (ky danh)) xay hoi. ((hieu ve) OR (hieu va)) cam loc va thanh vai cua te*.