Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
danh vai » danh sai, danh va, doanh van
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
vai cua » dai cua, hai cua, lai cua
xuc va » tuc va, luc va, xac va

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

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