Perhaps you should try some spelling variations:
sang tao » hang tai
hieu van » hieu va, thien van, lieu va
so sanh » do sanh
cau luc » cau truc, cau phuc
sang ma » tang ma, nang ma, mang may
danh vi » hanh vi, dinh vi, danh di
hieu ve » hieu va
sanh ky » hanh ky, sang ky, nganh ky
va danh » va dinh, va dan, va hanh
vi cua » vai cua, di cua
cua tu » cua tuc, cua su, cua cu
luc va » duc va, tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sanh ky ((sang ma) or (sang tao)) hai. ((hieu ve) or (hieu van)) cau luc va danh vi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sanh ky ((sang ma) OR (sang tao)) hai. ((hieu ve) OR (hieu van)) cau luc va danh vi cua tu.
• Adding a wildcard symbol may retrieve word variants: so sanh ky ((sang ma) or (sang tao)) hai. ((hieu ve) or (hieu van)) cau luc va danh vi cua tu*.