Perhaps you should try some spelling variations:
thuy hanh » thuc hanh, thuy anh, thuy canh
va triet » va thiet, va trien, ve triet
thu hanh » thuc hanh, thu thanh, thi hanh
hanh lam » thanh lap, hanh kem, hanh va
va hanh » van hanh, va thanh, va danh
hieu va » lieu va, hieu qua
tu sach » thu sach, su sach, te sach
hieu ve » hieu van
xuc va » duc va, tuc va, luc va
lam va » nam va, dam va, lam ha

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ((thu hanh) or (thuy hanh)) xa hoi. ((hieu ve) OR (hieu va)) cam xuc va hanh lam va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((thu hanh) OR (thuy hanh)) xa hoi. ((hieu ve) OR (hieu va)) cam xuc va hanh lam va triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((thu hanh) or (thuy hanh)) xa hoi. ((hieu ve) OR (hieu va)) cam xuc va hanh lam va triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ((thu hanh) or (thuy hanh)) xa hoi. ((hieu ve) OR (hieu va)) cam xuc va hanh lam va triet*.