Perhaps you should try some spelling variations:
tham thuc » nham thuc, pham thuc, tam thuc
thanh ve » hanh ve, thanh va, thanh vien
cham tuc » nham thuc, pham thuc, cham soc
so sach » so sanh, bo sach, co sach
sach ty » sach y, sach tu, sach thu
cua tre » cua te, cuu tre, cua triet
nang ma » tang ma, sang ma, nang cao
ty nang » ky nang, ty xang, ty hang
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ty nang ma hoi. lieu va ((cham tuc) OR (tham thuc)) va ((thanh ve) or (hanh vi)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty nang ma hoi. lieu va ((cham tuc) OR (tham thuc)) va ((thanh ve) OR (hanh vi)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ty nang ma hoi. lieu va ((cham tuc) OR (tham thuc)) va ((thanh ve) or (hanh vi)) cua tre".
• Adding a wildcard symbol may retrieve word variants: so sach ty nang ma hoi. lieu va ((cham tuc) OR (tham thuc)) va ((thanh ve) or (hanh vi)) cua tre*.