Perhaps you should try some spelling variations:
lmay nong » may cong, may nang, lam nong
may nong » may cong, may nang, mo nong
thanh vi » hanh vi, thanh va, thanh ve
va thanh » gia thanh, ban thanh, va tinh
cham luc » cham soc, nhan luc, cham cuu
tu sach » thu sach, su sach, te sach
cua tre » cua te, cuu tre, cua triet
vu cham » va cham, vu kham, tu cham
hieu vu » hieu va, hieu ve, hieu su
su tien » su kien, su hien, tu tieng
luc va » duc va, tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ((may nong) or (lmay nong)) xa hoi. hieu vu cham luc va thanh vi ((cua tre) or (su tien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((may nong) OR (lmay nong)) xa hoi. hieu vu cham luc va thanh vi ((cua tre) OR (su tien)).
• Adding a wildcard symbol may retrieve word variants: tu sach ((may nong) or (lmay nong)) xa hoi. hieu vu cham luc va thanh vi ((cua tre) or (su tien))*.