Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
va thanh » gia thanh, ban thanh, va tinh
vai cua » dai cua, hai cua, lai cua
cam luc » cam xuc, cau luc
hieu va » lieu va, hieu qua
hieu ve » hieu van
mai hoi » mai khoi, dai hoi, lai hoi
ky sang » ky nang, ky dang, ky tang
sai ky » sac ky
ma hoi » xa hoi, ma hoa, me hoi
luc va » duc va, tuc va, loc va
tu sai » tu bai, tu san, tu cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sai ky sang ((ma hoi) OR (mai hoi)). ((hieu ve) or (hieu va)) cam luc va thanh vai cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky sang ((ma hoi) OR (mai hoi)). ((hieu ve) OR (hieu va)) cam luc va thanh vai cua vat.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sai ky sang ((ma hoi) OR (mai hoi)). ((hieu ve) or (hieu va)) cam luc va thanh vai cua vat".
• Adding a wildcard symbol may retrieve word variants: tu sai ky sang ((ma hoi) OR (mai hoi)). ((hieu ve) or (hieu va)) cam luc va thanh vai cua vat*.