Perhaps you should try some spelling variations:
cam thuc » am thuc, nam thuc, cam thu
va thanh » gia thanh, ban thanh, va tinh
hieu ve » hieu va, hieu van
thuc va » thuc vat, thuc dan, thuc day
hai cua » thai cua, dai cua, hoi cua
ve cam » ve cham, ve cac, va cam
vi cua » vai cua, di cua
x hoi » xa hoi, x ho, 5 hoi
o hoi » co hoi, o hoc, o hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cac ky nang ((x hoi) OR (o hoi)). hieu ve cam thuc va thanh ((vi cua) or (hai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky nang ((x hoi) OR (o hoi)). hieu ve cam thuc va thanh ((vi cua) OR (hai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac ky nang ((x hoi) OR (o hoi)). hieu ve cam thuc va thanh ((vi cua) or (hai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: tu cac ky nang ((x hoi) OR (o hoi)). hieu ve cam thuc va thanh ((vi cua) or (hai cua)) tre*.