Perhaps you should try some spelling variations:
ban thanh » ban hang
thanh ve » hanh ve, thanh va, thanh vien
phuc ban » phuc van, thuc ban, thuoc ban
ban hanh » ban hang
van hanh » van thanh, van anh, van ban
sach uu » sach luu, sach tu, sach xu
nang xa » nang x, lang xa, nang ma
cach tu » cach thuc
cua tre » cua te, cuu tre, cua triet
ve cua » le cua, de cua, te cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: su ((sach uu) or (cach tu)) nang xa hoi. thien ((van hanh) OR (ban hanh)) phuc ban thanh ve cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach uu) OR (cach tu)) nang xa hoi. thien ((van hanh) OR (ban hanh)) phuc ban thanh ve cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach uu) or (cach tu)) nang xa hoi. thien ((van hanh) OR (ban hanh)) phuc ban thanh ve cua tre".
• Adding a wildcard symbol may retrieve word variants: su ((sach uu) or (cach tu)) nang xa hoi. thien ((van hanh) OR (ban hanh)) phuc ban thanh ve cua tre*.