Perhaps you should try some spelling variations:
thanh tay » thanh tai, thanh toan, thanh thuy
cua triet » cua viet, su triet, va triet
thanh tap » thanh lap, thanh tai, thanh tam
ky tang » ky dang, kho tang, ky trong
hoa hoi » khoa hoi, hoa hoc, hoa doi
hieu ve » hieu va, hieu van
cac duc » cac du, cao duc, cac dac
su sac » su sach, su cac, su xac
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 tang) or (ky nang)) hoa 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 tang) OR (ky nang)) hoa hoi. hieu ve cac duc va ((thanh tap) OR (thanh tay)) cua triet.
• Adding a wildcard symbol may retrieve word variants: su sac ((ky tang) or (ky nang)) hoa hoi. hieu ve cac duc va ((thanh tap) or (thanh tay)) cua triet*.