Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
va triet » va thiet, va trien, ve triet
truc van » truc va, thuc van, truc ban
hieu ve » hieu va, hieu van
lang ha » long ha
hanh de » hanh kem
hanh ve » hanh vi, hanh va, hanh kem
ky lang » ky nang, ky dang, ky tang
ha hoi » hoa hoi, ha noi, xa hoi
ve cau » ke cau, va cau, ve cac
sac ky » cac ky, sai ky
te sac » te sach, te cac, te san

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 truc van ((hanh de) or (hanh ve)) ((va triet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky lang ha hoi. hieu ve cau truc van ((hanh de) OR (hanh ve)) ((va triet) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: te sac ky lang ha hoi. hieu ve cau truc van ((hanh de) or (hanh ve)) ((va triet) or (su triet))*.