Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh hai » thanh phan, thanh hoa, thanh san
nang xay » dang xay, nganh xay, nang xuan
lanh hai » manh hai, lang chai, lanh dao
cac duc » cac du, cao duc, cac dac
su sach » vu sach
hieu ve » hieu va, hieu van
xay hoi » xa hoi, tay hoi, cay phoi
so sach » so sanh, bo sach, co sach
ve cac » va cac, vien cac

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) OR (so sach)) ky nang xay hoi. hieu ve cac duc tan ((lanh hai) or (thanh hai)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ky nang xay hoi. hieu ve cac duc tan ((lanh hai) OR (thanh hai)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (so sach)) ky nang xay hoi. hieu ve cac duc tan ((lanh hai) or (thanh hai)) cua triet".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (so sach)) ky nang xay hoi. hieu ve cac duc tan ((lanh hai) or (thanh hai)) cua triet*.