Perhaps you should try some spelling variations:
vu khach » vu khanh, vu khac, vay khach
cua tre » cua te, cuu tre, cua triet
nang co » nang cao, nang doc, nang noi
hieu va » lieu va, hieu qua
thue va » thuc va, thuyet va, thuc vat
vi cua » vai cua, di cua
thu va » thuc va, tu va, thu ha
co loi » co hoi
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu bach) or (vu khach)) ky nang co loi. hieu va cam ((thu va) OR (thue va)) hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu bach) OR (vu khach)) ky nang co loi. hieu va cam ((thu va) OR (thue va)) hanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu bach) or (vu khach)) ky nang co loi. hieu va cam ((thu va) OR (thue va)) hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: ((vu bach) or (vu khach)) ky nang co loi. hieu va cam ((thu va) OR (thue va)) hanh vi cua tre*.