Perhaps you should try some spelling variations:
hanh tai » thanh tai, hang tai, han tai
tu sach » thu sach, su sach, te sach
cao hoi » cau hoi, cao hoc, tao hoi
lieu ha » lieu nha, lieu va, liem ha
thuc va » thuc vat, thuc dan, thuc day
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
co hoi » co hoc, co loi
ha am » hoa am, ha nam, ha lam

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 y nang ((cao hoi) OR (co hoi)). lieu ha am thuc va ((hanh tai) or (dung tai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang ((cao hoi) OR (co hoi)). lieu ha am thuc va ((hanh tai) OR (dung tai)) cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang ((cao hoi) OR (co hoi)). lieu ha am thuc va ((hanh tai) or (dung tai)) cua tre*".