Perhaps you should try some spelling variations:
nham thuc » nhan thuc, nam thuc, nham thu
cham tuc » pham thuc, tham thuc, cham soc
thanh vi » thanh va, thanh ve, nhanh vi
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
xang xa » lang xa, mang xa, ang xa
cua tre » cua te, cuu tre, cua triet

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 ty xang xa hoi. lieu va ((cham tuc) OR (nham thuc)) va ((thanh vi) or (hanh vi)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty xang xa hoi. lieu va ((cham tuc) OR (nham thuc)) va ((thanh vi) OR (hanh vi)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty xang xa hoi. lieu va ((cham tuc) OR (nham thuc)) va ((thanh vi) or (hanh vi)) cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach ty xang xa hoi. lieu va ((cham tuc) OR (nham thuc)) va ((thanh vi) or (hanh vi)) cua tre*.