Perhaps you should try some spelling variations:
ban benh » san benh, ba benh, ban banh
toc sach » hoc sach, doc sach, thuoc sach
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
thi van » thi lan, thi hanh, thi nang
nam xuc » nam xua, nam thuc, nam duoc
benh li » benh ly, benh lo, benh vi
cua tre » cua te, cuu tre, cua triet
li cua » lai cua, le cua, ly cua

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) or (toc sach)) ky nang xa hoi. thi van ((nam xuc) OR (cam xuc)) ban benh li cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (toc sach)) ky nang xa hoi. thi van ((nam xuc) OR (cam xuc)) ban benh li cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (toc sach)) ky nang xa hoi. thi van ((nam xuc) OR (cam xuc)) ban benh li cua tre*".