Perhaps you should try some spelling variations:
nhanh doc » nhanh soc, nhanh dong, nang doc
cham luc » cham soc, nhan luc, cham cuu
tu nhanh » tu nhan, tu hanh, tu thanh
van hanh » van thanh, ban hanh, van ban
tu sach » thu sach, su sach, te sach
cua tre » cuu tre, cua triet, dua tren
van anh » van thanh, tuan anh, van minh
sach tu » sach thu, cach tu, sach ty
su cham » su pham, tu cham, vu cham
hieu su » hieu sau, tieu su, hieu so
doc hoi » duoc hoi, hoc hoi, doc hai
cua te » cua tu

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 tu nhanh doc hoi. hieu su cham luc ((van hanh) or (van anh)) vi ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tu nhanh doc hoi. hieu su cham luc ((van hanh) OR (van anh)) vi ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach tu nhanh doc hoi. hieu su cham luc ((van hanh) or (van anh)) vi ((cua tre) OR (cua te))".
• Adding a wildcard symbol may retrieve word variants: tu sach tu nhanh doc hoi. hieu su cham luc ((van hanh) or (van anh)) vi ((cua tre) OR (cua te))*.