Perhaps you should try some spelling variations:
nang cay » nang cao, nang cap, nang cai
cay phoi » cap phoi, tay hoi, cay cho
thanh ha » thanh hoa, thanh hai, nhanh ha
chat xuc » chat huu, cam xuc, chao xu
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
hieu ve » hieu van
luu tre » luu tru, cuu tre, luy tre
xuc va » duc va, tuc 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: tu sach ky nang cay phoi. ((hieu ve) OR (hieu va)) chat xuc va ((thanh ha) or (hanh vi)) luu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang cay phoi. ((hieu ve) OR (hieu va)) chat xuc va ((thanh ha) OR (hanh vi)) luu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang cay phoi. ((hieu ve) OR (hieu va)) chat xuc va ((thanh ha) or (hanh vi)) luu tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang cay phoi. ((hieu ve) OR (hieu va)) chat xuc va ((thanh ha) or (hanh vi)) luu tre*.