Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ky lang » ky nang, ky dang, ky tang
lang ha » long ha
hanh de » hanh ve, hanh kem
duc van » duc va, duc tan, duc manh
te sac » te sach, te cac, te san
ve cac » va cac, vien cac
sac ky » cac ky, sai ky
ve cau » ke cau, va cau, le cau
ha hoi » hoa hoi, ha noi, xa hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky lang ha hoi. hieu ((ve cau) OR (ve cac)) duc van ((hanh de) or (hanh vi)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky lang ha hoi. hieu ((ve cau) OR (ve cac)) duc van ((hanh de) OR (hanh vi)) cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky lang ha hoi. hieu ((ve cau) OR (ve cac)) duc van ((hanh de) or (hanh vi)) cua triet".
• Adding a wildcard symbol may retrieve word variants: te sac ky lang ha hoi. hieu ((ve cau) OR (ve cac)) duc van ((hanh de) or (hanh vi)) cua triet*.