Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh dai » hanh dao, vanh dai, thanh dat
hanh tai » thanh tai, hang tai, han tai
nang xa » nang x, lang xa, nang ma
hieu va » lieu va
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
soc va » hoc va, loc va, doc va

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 ky nang xa hoi. ((hieu va) or (hieu qua)) cham soc va ((hanh dai) OR (hanh tai)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang xa hoi. ((hieu va) OR (hieu qua)) cham soc va ((hanh dai) OR (hanh tai)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang xa hoi. ((hieu va) or (hieu qua)) cham soc va ((hanh dai) OR (hanh tai)) cua triet".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang xa hoi. ((hieu va) or (hieu qua)) cham soc va ((hanh dai) OR (hanh tai)) cua triet*.