Perhaps you should try some spelling variations:
cua triet » su triet, va triet
hanh tai » thanh tai, hang tai, han tai
cua viet » ca viet, hoa viet, cua vat
vu sach » vu bach, su sach, vu khach
hieu va » lieu va, hieu qua
va cham » va chat, va tham
va hanh » van hanh, va thanh, va danh
tu sac » tu sach, tu cac, tu san
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 sac) or (vu sach)) ky nang x hoi. hieu va cham soc va hanh tai ((cua triet) OR (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (vu sach)) ky nang x hoi. hieu va cham soc va hanh tai ((cua triet) OR (cua viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sac) or (vu sach)) ky nang x hoi. hieu va cham soc va hanh tai ((cua triet) OR (cua viet))".
• Adding a wildcard symbol may retrieve word variants: ((tu sac) or (vu sach)) ky nang x hoi. hieu va cham soc va hanh tai ((cua triet) OR (cua viet))*.