Perhaps you should try some spelling variations:
ban thanh » ban hang
sang tao » hang tai
ban hanh » ban hang
cham luc » cham soc, nhan luc, cham cuu
te sach » toc sach
cua tre » cuu tre, cua triet, dua tren
sach ty » sach y, sach tu, sach thu
vu cham » va cham, vu kham, tu cham
hieu vu » hieu va, hieu ve, hieu su
tao hoi » tao khoi, tao boi, tay hoi
ty sang » ty xang, ty hang, duy sang
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: te sach ty sang tao hoi. hieu vu cham luc ((ban thanh) or (ban hanh)) lap ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty sang tao hoi. hieu vu cham luc ((ban thanh) OR (ban hanh)) lap ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: te sach ty sang tao hoi. hieu vu cham luc ((ban thanh) or (ban hanh)) lap ((cua tre) or (cua te))*.