Perhaps you should try some spelling variations:
qua cham » qua hai, qua cac, va cham
hanh dai » hanh tai, hanh dao, vanh dai
va triet » va thiet, ve triet, cua triet
va trien » va truyen, va thiet, va tuyen
tu bach » vu bach, tu cach, tu hach
va hanh » van hanh, va thanh, va danh
tu bac » tu ban, tu cac, tu bat
soc va » hoc va, loc va, doc va
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: ((tu bac) or (tu bach)) ky nang x hoi. hieu qua cham soc va hanh dai ((va triet) OR (va trien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu bac) OR (tu bach)) ky nang x hoi. hieu qua cham soc va hanh dai ((va triet) OR (va trien)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu bac) or (tu bach)) ky nang x hoi. hieu qua cham soc va hanh dai ((va triet) OR (va trien))".
• Adding a wildcard symbol may retrieve word variants: ((tu bac) or (tu bach)) ky nang x hoi. hieu qua cham soc va hanh dai ((va triet) OR (va trien))*.