Perhaps you should try some spelling variations:
dao dien » dao tien, dat dien, do dien
dien cua » dieu cua, dien cuc, dien cu
nang xa » nang x, lang xa, nang ma
hieu su » hieu sau, tieu su, hieu so
su cham » su pham, tu cham, vu cham
cua tre » cua te, cuu tre, cua triet
soc va » hoc va, loc va, doc va
va dao » ca dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sach 2) OR (sach y)) nang xa hoi. hieu su cham soc va dao dien cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach 2) OR (sach y)) nang xa hoi. hieu su cham soc va dao dien cua tre".
• Adding a wildcard symbol may retrieve word variants: te ((sach 2) OR (sach y)) nang xa hoi. hieu su cham soc va dao dien cua tre*.