Perhaps you should try some spelling variations:
thuy canh » thuy anh, thu canh, thuy hanh
va triet » va thiet, va trien, ve triet
tu thanh » thu thanh, su thanh, ta thanh
hanh lam » thanh lap, hanh kem, hanh va
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
cam duc » cam xuc, cao duc, pham duc
tu sach » thu sach, su sach, te sach
hieu ve » hieu van
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 ((tu thanh) or (thuy canh)) xa hoi. ((hieu ve) or (hieu va)) cam duc va hanh lam va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((tu thanh) OR (thuy canh)) xa hoi. ((hieu ve) OR (hieu va)) cam duc va hanh lam va triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ((tu thanh) or (thuy canh)) xa hoi. ((hieu ve) or (hieu va)) cam duc va hanh lam va triet*.