Perhaps you should try some spelling variations:
giao thanh » gia thanh, gian thanh, giay thanh
thanh hai » thanh phan, thanh hoa, thanh san
tac giao » tac gia, tac giai, tac giam
vu sach » vu bach, su sach, vu khach
van lam » van nam
sach ky » sac ky, sach y, sach ty
van cam » van nam, van cau, van dam
nang so » nang som, nang co, nang ho
so hoc » co hoc, mo hoc, so hoa
cua te » cua tu
cua su » qua su

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ky nang so hoc. hieu ((van cam) or (van lam)) tac giao thanh hai ((cua te) or (cua su))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ky nang so hoc. hieu ((van cam) OR (van lam)) tac giao thanh hai ((cua te) OR (cua su)).
• Adding a wildcard symbol may retrieve word variants: vu sach ky nang so hoc. hieu ((van cam) or (van lam)) tac giao thanh hai ((cua te) or (cua su))*.