Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
thanh vai » thanh van, thanh tai, thanh oai
cua triet » cua viet, su triet, va triet
su sach » so sach, vu sach
hieu ve » hieu va, hieu van
y nang » ly nang, v nang, may nang
ve cap » ve cac, le cap, ve cai
cuu va » cuu van, cuu ve

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

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