Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
cau theo » cau thi, cau tao
cau treo » cau tren, cau triet, cau trieu
va thanh » gia thanh, ban thanh, va tinh
cao duc » dao duc, cao suc, giao duc
ky sang » ky nang, ky dang, ky tang
hieu ve » hieu va, hieu van
dai hoi » dai hoc, dai hai, dai moi
mai hoi » mai khoi, lai hoi, mai doi
ve cao » va cao, ve bao, ve cac

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky sang ((mai hoi) OR (dai hoi)). hieu ve cao duc va thanh vai ((cau treo) OR (cau theo))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac ky sang ((mai hoi) OR (dai hoi)). hieu ve cao duc va thanh vai ((cau treo) or (cau theo))~".
• Adding a wildcard symbol may retrieve word variants: tu cac ky sang ((mai hoi) OR (dai hoi)). hieu ve cao duc va thanh vai ((cau treo) or (cau theo))*.