Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
thanh tai » thanh hai, thanh toan, doanh tai
su triet » su viet, su tien, ve triet
nang lai » nang tai, mang lai, nang cai
lai hoa » dai hoa, loai hoc
hieu ve » hieu va, hieu van
su sac » su sach, su cac, su xac
ve cam » ve cham, ve cac, va cam
sac ky » cac ky, sai ky
luc va » tuc va, loc va

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 nang lai hoa. hieu ve cam ((luc va) or (duc va)) thanh tai ((cua triet) OR (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky nang lai hoa. hieu ve cam ((luc va) OR (duc va)) thanh tai ((cua triet) OR (su triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky nang lai hoa. hieu ve cam ((luc va) or (duc va)) thanh tai ((cua triet) OR (su triet))".
• Adding a wildcard symbol may retrieve word variants: su sac ky nang lai hoa. hieu ve cam ((luc va) or (duc va)) thanh tai ((cua triet) OR (su triet))*.