Perhaps you should try some spelling variations:
cham luc » cham soc, nhan luc, cham cuu
nang doc » nang luc
ban hanh » ban hang
van hanh » van thanh, van anh, van ban
cua tre » cuu tre, cua triet, dua tren
tu sach » thu sach, su sach, te sach
sach tu » sach thu, cach tu, sach ty
so cham » so kham, co cham, so chat
hieu so » thieu so
doc hoi » duoc hoi, hoc hoi, doc hai
tu nang » tru nang, tu nong, tu nano
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 nang doc hoi. hieu so cham luc ((van hanh) OR (ban hanh)) vi ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach tu nang doc hoi. hieu so cham luc ((van hanh) OR (ban hanh)) vi ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach tu nang doc hoi. hieu so cham luc ((van hanh) OR (ban hanh)) vi ((cua tre) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: tu sach tu nang doc hoi. hieu so cham luc ((van hanh) OR (ban hanh)) vi ((cua tre) or (cua te))*.