Perhaps you should try some spelling variations:
thanh lam » thanh lap, hanh lam, thanh nam
cua triet » cua viet, su triet, va triet
vien cac » vien bach, vien dai, vien da
va thanh » gia thanh, ban thanh, va tinh
su sach » so sach, vu sach
ky lang » ky dang, ky tang, tay lang
lam cua » nam cua, lam chat
ve cac » va 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 ((ky lang) OR (ky nang)) xa hoi. hieu ((ve cac) or (vien cac)) duc va thanh lam cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ky lang) OR (ky nang)) xa hoi. hieu ((ve cac) OR (vien cac)) duc va thanh lam cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ky lang) OR (ky nang)) xa hoi. hieu ((ve cac) or (vien cac)) duc va thanh lam cua triet".
• Adding a wildcard symbol may retrieve word variants: su sach ((ky lang) OR (ky nang)) xa hoi. hieu ((ve cac) or (vien cac)) duc va thanh lam cua triet*.