Perhaps you should try some spelling variations:
thuc dan » thuc hanh, hoc dan, thuc vat
van hanh » van thanh, ban hanh, van anh
thu dan » thu dang, thu ban, thu san
va danh » va dinh, va dan, va hanh
cao duc » dao duc, cao suc, giao duc
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
ve cao » va cao, ve bao, ve cac
di cua » dai cua, doi cua, de cua
cua cu » cua chu, cua cau, cua su

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu dan) OR (thuc dan)) ky nang xa hoi. hieu ve cao duc ((van hanh) or (va danh)) di cua cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu dan) OR (thuc dan)) ky nang xa hoi. hieu ve cao duc ((van hanh) OR (va danh)) di cua cu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu dan) OR (thuc dan)) ky nang xa hoi. hieu ve cao duc ((van hanh) or (va danh)) di cua cu".
• Adding a wildcard symbol may retrieve word variants: ((thu dan) OR (thuc dan)) ky nang xa hoi. hieu ve cao duc ((van hanh) or (va danh)) di cua cu*.