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

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~.
• 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".
• 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*.