Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
van hanh » ban hanh, van anh, van ban
te sach » toc sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
qua hai » qua hoat
hai xuc » hai cuc, hai xu, chat xuc
cua tu » cua tuc, cua su, cua cu

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 nang x ho. hieu qua hai xuc ((van hanh) or (van thanh)) hoi ((cua te) OR (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang x ho. hieu qua hai xuc ((van hanh) OR (van thanh)) hoi ((cua te) OR (cua tu))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty nang x ho. hieu qua hai xuc ((van hanh) or (van thanh)) hoi ((cua te) OR (cua tu))*".