Perhaps you should try some spelling variations:
nam thuc » nam thuoc, am thuc, nam thu
hanh tai » thanh tai, hang tai, han tai
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
xa hanh » xa thanh, xa khanh, va hanh
thuc xa » thuc xay, tuc xa, thuc va
lieu ha » lieu nha, lieu va, liem ha
sang ma » tang ma, sang tao, mang may
nang ma » tang ma, nang cao, mang may
sac ky » cac ky, sai ky
tu sac » tu sach, tu cac, tu san

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky ((nang ma) OR (sang ma)) hoi. lieu ha nam thuc xa hanh tai ((cuu tre) or (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky ((nang ma) OR (sang ma)) hoi. lieu ha nam thuc xa hanh tai ((cuu tre) OR (cua tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky ((nang ma) OR (sang ma)) hoi. lieu ha nam thuc xa hanh tai ((cuu tre) or (cua tre))".
• Adding a wildcard symbol may retrieve word variants: tu sac ky ((nang ma) OR (sang ma)) hoi. lieu ha nam thuc xa hanh tai ((cuu tre) or (cua tre))*.