Perhaps you should try some spelling variations:
danh hai » dang hai, lanh hai, manh hai
te sach » toc sach
sach ky » sac ky, sach y, sach ty
cao hoi » co hoi, cao hoc, tao hoi
hiem he » hiem xe, hieu he, thien he
va danh » va dinh, va dan, va hanh
hai cua » thai cua, dai cua, hoi cua
cua tre » cua te, cuu tre, cua triet
he nam » ha nam, nghe nam
thu va » thuc va, thue va, tu va

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 ky nang ((cao hoi) or (cau hoi)). hiem he nam thu va danh hai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ((cao hoi) OR (cau hoi)). hiem he nam thu va danh hai cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ((cao hoi) or (cau hoi)). hiem he nam thu va danh hai cua tre*.