Perhaps you should try some spelling variations:
hieu suat » hieu luat, hieu qua
sang cao » nang cao, sang tao, sang cho
cao sang » cao dang, cao tang, cao bang
sang lai » sang tai, sang lap, mang lai
hieu sau » hieu su, tieu su, hieu va
van hanh » van thanh, ban hanh, van anh
tu sang » thu sang, tu san, tu lang
lai roi » lai hoi, loi roi
xu van » tu van, vu van, su van
vi cua » vai cua, di cua
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 sang cao sang lai roi. ((hieu sau) or (hieu suat)) chao xu van hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sang cao sang lai roi. ((hieu sau) OR (hieu suat)) chao xu van hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: tu sang cao sang lai roi. ((hieu sau) or (hieu suat)) chao xu van hanh vi cua te*.