Perhaps you should try some spelling variations:
hanh hai » thanh hai, nhanh hai, hang hai
te sach » toc sach
sach ky » sac ky, sach y, sach ty
mai hoi » mai khoi, dai hoi, lai hoi
cac dai » cac dan, cac bai, can dai
va hanh » van hanh, va thanh, va danh
hai cua » thai cua, dai cua, hoi cua
ma hoi » xa hoi, ma hoa, me hoi
dai va » mai 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 ((ma hoi) or (mai hoi)). lieu va cac dai va hanh hai cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ((ma hoi) OR (mai hoi)). lieu va cac dai va hanh hai cua vat.
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ((ma hoi) or (mai hoi)). lieu va cac dai va hanh hai cua vat*.