Perhaps you should try some spelling variations:
thanh lam » thanh lap, hanh lam, thanh nam
so triet » su triet, so thiet, bo triet
va thanh » gia thanh, ban thanh, va tinh
van chat » cao chat
van cau » van dau, van hau, toan cau
su sach » so sach, vu sach
tu sach » thu sach, te sach, tu cach
nang o » nang co, nang ho, nang ro
lam so » lam son, nam so, ham so
o hai » co hai, so hai, o lai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) OR (su sach)) ky nang o hai. hieu ((van cau) or (van chat)) duc va thanh lam so triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ky nang o hai. hieu ((van cau) OR (van chat)) duc va thanh lam so triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (su sach)) ky nang o hai. hieu ((van cau) or (van chat)) duc va thanh lam so triet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (su sach)) ky nang o hai. hieu ((van cau) or (van chat)) duc va thanh lam so triet*.