Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
hieu hien » bieu hien, dieu hien, chieu chien
hieu viec » nhieu viec, hieu ve, sieu viet
thanh vi » hanh vi, thanh va, thanh ve
sach ty » sach tu, sach thu, xach tay
cuu tre » cua tre, cau tren, cau treo
nang xa » nang x, lang xa, nang ma
cac tu » cac thu, cach tu, cac du
tu van » tu va
vi cuu » vi luu, vinh cuu

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 ty) OR (sach y)) nang xa hoi. ((hieu viec) or (hieu hien)) cac tu van thanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach y)) nang xa hoi. ((hieu viec) OR (hieu hien)) cac tu van thanh vi cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ty) OR (sach y)) nang xa hoi. ((hieu viec) or (hieu hien)) cac tu van thanh vi cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) OR (sach y)) nang xa hoi. ((hieu viec) or (hieu hien)) cac tu van thanh vi cuu tre*.