Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh de » hanh ve, hanh kem
cau duc » cao duc, cau luc, chu duc
hieu ve » hieu va, hieu van
ky lang » ky nang, ky dang, ky tang
lai ky » sai ky, dai ky
ve cau » ke cau, va cau, ve cac
ha hoi » hoa hoi, ha noi, va hoi
te lai » te tai, te bai

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

• Performing a fuzzy search may retrieve terms with similar spellings: te lai ky lang ((ha hoi) or (xa hoi)). hieu ve cau duc va ((hanh de) or (hanh vi)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te lai ky lang ((ha hoi) OR (xa hoi)). hieu ve cau duc va ((hanh de) OR (hanh vi)) cua triet.
• Adding a wildcard symbol may retrieve word variants: te lai ky lang ((ha hoi) or (xa hoi)). hieu ve cau duc va ((hanh de) or (hanh vi)) cua triet*.