Perhaps you should try some spelling variations:
dam thuc » am thuc, dan thuc, nam thuc
va thanh » gia thanh, ban thanh, va tinh
thanh do » thanh de, thanh pho, thanh hoa
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
hieu ve » hieu van
hieu va » lieu va, hieu qua
do cua » doi cua, co cua, de 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: su sach ky nang x hoi. ((hieu ve) or (hieu va)) ((dam thuc) or (cam xuc)) va thanh do cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang x hoi. ((hieu ve) OR (hieu va)) ((dam thuc) OR (cam xuc)) va thanh do cua vat.
• Adding a wildcard symbol may retrieve word variants: su sach ky nang x hoi. ((hieu ve) or (hieu va)) ((dam thuc) or (cam xuc)) va thanh do cua vat*.