Perhaps you should try some spelling variations:
sang tao » hang tai
sang lap » sang ma, sang tai, dan lap
hieu va » lieu va, hieu qua
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
cam luc » cam xuc, cau luc
vi cua » vai cua, di cua
luc va » duc va, tuc va, loc va
va cam » va cham, va cac, va cao
sac ky » sai 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: so ((sac ky) or (cac ky)) ((sang lap) OR (sang tao)) hai. hieu va cam luc va danh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so ((sac ky) OR (cac ky)) ((sang lap) OR (sang tao)) hai. hieu va cam luc va danh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so ((sac ky) or (cac ky)) ((sang lap) OR (sang tao)) hai. hieu va cam luc va danh vi cua te".
• Adding a wildcard symbol may retrieve word variants: so ((sac ky) or (cac ky)) ((sang lap) OR (sang tao)) hai. hieu va cam luc va danh vi cua te*.