Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
cau thuc » cau truc, cuu thuc, can thuc
lang xa » lang ha, dang xay, lang van
van cau » van dau, van hau, van chat
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
ve cua » le cua, de cua, ve cum
te cua » tue cua, le cua, de cua

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 y) or (sac o)) lang xa hoi. hieu van cau thuc va hanh ((ve cua) or (te cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach y) OR (sac o)) lang xa hoi. hieu van cau thuc va hanh ((ve cua) OR (te cua)) te.
• Adding a wildcard symbol may retrieve word variants: tu ((sach y) or (sac o)) lang xa hoi. hieu van cau thuc va hanh ((ve cua) or (te cua)) te*.