Perhaps you should try some spelling variations:
hieu suat » hieu luat, hieu qua
mang lam » bang lam, mang lai, mang mam
chat xuc » chat huu, cam xuc, chao xu
va hanh » van hanh, va thanh, ban hanh
ky mang » ky nang, ke mang, ky dang
lam hoi » lam thoi, nam hoi, lai hoi
hieu su » hieu sau, tieu su, hieu so
va danh » va dinh, va dan, dia danh
vi cua » vai cua, di cua
tu sai » tu bai, tu san, tu cai
sai ky » sac ky
cua te » cua tu

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 mang lam hoi. ((hieu su) or (hieu suat)) chat xuc ((va hanh) or (va danh)) vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky mang lam hoi. ((hieu su) OR (hieu suat)) chat xuc ((va hanh) OR (va danh)) vi cua te.
• Adding a wildcard symbol may retrieve word variants: tu sai ky mang lam hoi. ((hieu su) or (hieu suat)) chat xuc ((va hanh) or (va danh)) vi cua te*.