Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
nam thuc » nam thuoc, am thuc, nam thu
lang xa » lang ha, dang xay, lang van
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
sac ky » sai ky
ve ve » de ve, va ve, ke ve
va de » va do, va le

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sac ky) or (cac ky)) lang xa hoi. hieu van nam thuc va hanh ((ve ve) or (va de)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sac ky) OR (cac ky)) lang xa hoi. hieu van nam thuc va hanh ((ve ve) OR (va de)) triet.
• Adding a wildcard symbol may retrieve word variants: te ((sac ky) or (cac ky)) lang xa hoi. hieu van nam thuc va hanh ((ve ve) or (va de)) triet*.