Perhaps you should try some spelling variations:
cham tuc » nham thuc, pham thuc, tham thuc
dinh dat » dinh ket, dinh van, dinh lam
dinh dau » dinh du, danh dau, dinh dao
van cham » van chat, van tham, va cham
nang ma » tang ma, sang ma, nang cao
thi van » thi lan, thi hanh, thi nang
sach ky » sac ky, sach ty, sach kem
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc ((sach ky) or (sach y)) nang ma hoi. thi van cham tuc va ((dinh dau) OR (dinh dat)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc ((sach ky) OR (sach y)) nang ma hoi. thi van cham tuc va ((dinh dau) OR (dinh dat)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc ((sach ky) or (sach y)) nang ma hoi. thi van cham tuc va ((dinh dau) OR (dinh dat)) cua tre".
• Adding a wildcard symbol may retrieve word variants: thuoc ((sach ky) or (sach y)) nang ma hoi. thi van cham tuc va ((dinh dau) OR (dinh dat)) cua tre*.