Perhaps you should try some spelling variations:
tham thuc » nham thuc, pham thuc, tam thuc
hanh lam » thanh lap, hanh kem, hanh va
cham tuc » nham thuc, pham thuc, cham soc
sach ky » sac ky, sach ty, sach kem
va hanh » van hanh, va thanh, va danh
lam cua » nam cua, lam chat
cua tre » cua te, cuu tre, cua triet
x hoi » xa hoi, o hoi, x ho

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

• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((sach ky) OR (sach y)) nang x hoi. su thi ((cham tuc) OR (tham thuc)) va hanh lam cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((sach ky) or (sach y)) nang x hoi. su thi ((cham tuc) OR (tham thuc)) va hanh lam cua tre~".
• Adding a wildcard symbol may retrieve word variants: doc ((sach ky) or (sach y)) nang x hoi. su thi ((cham tuc) OR (tham thuc)) va hanh lam cua tre*.