Perhaps you should try some spelling variations:
xa khanh » xa thanh, van khanh, dat khanh
nam thuc » nam thuoc, am thuc, nam thu
sach kem » hanh kem
thuc xa » thuc xay, tuc xa, thuc va
hieu va » lieu va, hieu qua
sach ty » sach y, sach tu, sach thu
va nam » van nam, ha nam, va nay
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach kem) or (sach ty)) nang x hoi. hieu va nam thuc xa khanh ((ke cau) OR (ket cau)) theo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach kem) OR (sach ty)) nang x hoi. hieu va nam thuc xa khanh ((ke cau) OR (ket cau)) theo.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach kem) or (sach ty)) nang x hoi. hieu va nam thuc xa khanh ((ke cau) OR (ket cau)) theo".
• Adding a wildcard symbol may retrieve word variants: tu ((sach kem) or (sach ty)) nang x hoi. hieu va nam thuc xa khanh ((ke cau) OR (ket cau)) theo*.