Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh tap » thanh lap, thanh tai, thanh tam
thanh tay » thanh tai, thanh toan, thanh thuy
ky lang » ky dang, ky tang, tay lang
hieu ve » hieu va, hieu van
cac duc » cac du, cao duc, cac dac
su sac » su sach, su cac, su xac
ha hoi » hoa hoi, ha noi, xa hoi
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 sac ((ky lang) OR (ky nang)) ha hoi. hieu ve cac duc va ((thanh tap) or (thanh tay)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ((ky lang) OR (ky nang)) ha hoi. hieu ve cac duc va ((thanh tap) OR (thanh tay)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ((ky lang) OR (ky nang)) ha hoi. hieu ve cac duc va ((thanh tap) or (thanh tay)) cua triet".
• Adding a wildcard symbol may retrieve word variants: su sac ((ky lang) OR (ky nang)) ha hoi. hieu ve cac duc va ((thanh tap) or (thanh tay)) cua triet*.