Perhaps you should try some spelling variations:
cam thuc » cam thu, can thuc, cay thuc
nam thuc » nam thuoc, nam thu, nam tu
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
hanh di » hanh vi, hanh de, hang di
di cua » dai cua, doi cua, de cua
cua te » cua tu

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 xa hoi. hieu ve ((((cam thuc) OR (nam thuc))) or (am thuc)) va hanh di cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky nang xa hoi. hieu ve ((((cam thuc) OR (nam thuc))) OR (am thuc)) va hanh di cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac ky nang xa hoi. hieu ve ((((cam thuc) OR (nam thuc))) or (am thuc)) va hanh di cua te".
• Adding a wildcard symbol may retrieve word variants: tu cac ky nang xa hoi. hieu ve ((((cam thuc) OR (nam thuc))) or (am thuc)) va hanh di cua te*.