Perhaps you should try some spelling variations:
nam thuc » nam thuoc, nam thu, nam tu
da thanh » dao thanh, dat thanh, dam thanh
thanh va » thanh van, hanh va, thanh ha
sach ky » sach y, sach ty, sach kem
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cuu tre » cua tre, cau tren, cau treo
sac ky » cac ky, sai ky
va cuu » va cau, va chu, va huu

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

• Performing a fuzzy search may retrieve terms with similar spellings: su ((sach ky) OR (sac ky)) nang xa hoi. hieu ve ((nam thuc) or (am thuc)) da thanh va cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ky) OR (sac ky)) nang xa hoi. hieu ve ((nam thuc) OR (am thuc)) da thanh va cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach ky) OR (sac ky)) nang xa hoi. hieu ve ((nam thuc) or (am thuc)) da thanh va cuu tre*".