Perhaps you should try some spelling variations:
sang tai » hang tai, sang tao, tang tai
van hanh » van thanh, ban hanh, van anh
tai khoi » tai khoa, mai khoi, tao khoi
hieu su » hieu sau, tieu su, hieu suat
hieu so » thieu so
xuc van » duc van, luc van, vuc van
vi cua » vai cua, di cua
sac ky » cac 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) or (sac ky)) sang tai khoi. ((hieu su) or (hieu so)) cam xuc van hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sai ky) OR (sac ky)) sang tai khoi. ((hieu su) OR (hieu so)) cam xuc van hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: tu ((sai ky) or (sac ky)) sang tai khoi. ((hieu su) or (hieu so)) cam xuc van hanh vi cua te*.