Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cau luc » cau truc, cau phuc
hanh de » hanh ve, hanh kem
luc van » luoc van, luu van, duc van
hieu va » lieu va, hieu qua
lang ha » long ha
hieu ve » hieu van
ky lang » ky nang, ky dang, ky tang
sac ky » cac ky, sai ky
ha hoi » hoa hoi, ha noi, xa hoi
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) OR (hieu va)) cau luc 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) OR (hieu va)) cau luc 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) OR (hieu va)) cau luc van ((hanh de) or (hanh vi)) cua triet".
• Adding a wildcard symbol may retrieve word variants: te sac ky lang ha hoi. ((hieu ve) OR (hieu va)) cau luc van ((hanh de) or (hanh vi)) cua triet*.