Perhaps you should try some spelling variations:
sang tao » hang tai
nam thuc » nam thuoc, am thuc, nam thu
nang ma » tang ma, sang ma, nang cao
thuc xa » thuc xay, tuc xa, thuc va
tai cuu » tai cuc, tai cua, thai cua
tu sai » tu bai, tu san, tu cai
sai ky » sac ky
va nam » van nam, ha nam, va nay
xa han » xa phan, va han, xa ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky ((nang ma) OR (sang tao)) hoi. lieu va nam thuc xa han ((tai cuu) OR (tai buu)) tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sai ky ((nang ma) or (sang tao)) hoi. lieu va nam thuc xa han ((tai cuu) OR (tai buu)) tre~".
• Adding a wildcard symbol may retrieve word variants: tu sai ky ((nang ma) or (sang tao)) hoi. lieu va nam thuc xa han ((tai cuu) OR (tai buu)) tre*.