Perhaps you should try some spelling variations:
cua triet » su triet, va triet
cua viet » ca viet, hoa viet, cua vat
cham tuc » nham thuc, pham thuc, tham thuc
doan vi » doan va, don vi, doan thi
va doan » va doanh, van doan, va dan
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
sang ma » tang ma, nang ma, sang tao
sac ky » sai ky
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sac ky) or (cac ky)) sang ma hoa. hieu ve cham tuc va doan vi ((cua triet) OR (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sac ky) OR (cac ky)) sang ma hoa. hieu ve cham tuc va doan vi ((cua triet) OR (cua viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sac ky) or (cac ky)) sang ma hoa. hieu ve cham tuc va doan vi ((cua triet) OR (cua viet))".
• Adding a wildcard symbol may retrieve word variants: tu ((sac ky) or (cac ky)) sang ma hoa. hieu ve cham tuc va doan vi ((cua triet) OR (cua viet))*.