Perhaps you should try some spelling variations:
bo cach » bo sach, bo canh, co cach
cach tu » cach thuc
va hanh » van hanh, va thanh, va danh
cao duc » dao duc, cao suc, giao duc
cam duc » cam xuc, pham duc, nam duoc
hieu va » lieu va, hieu qua
hieu ve » hieu van
tu nang » tru nang, tu nong, tu nano
vi cua » vai cua, di cua
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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

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