Perhaps you should try some spelling variations:
ve triet » va trien, su triet
hanh sai » hanh san, hanh tai, danh sai
cua duc » cua tuc, cua nuoc, cua quoc
va hanh » van hanh, va thanh, va danh
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
sac ky » cac ky
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, luc va

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sac ky) OR (sai ky)) lang xa hoi. hieu va cam xuc va hanh sai ((ve triet) OR (cua duc))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sac ky) OR (sai ky)) lang xa hoi. hieu va cam xuc va hanh sai ((ve triet) or (cua duc))~".
• Adding a wildcard symbol may retrieve word variants: te ((sac ky) OR (sai ky)) lang xa hoi. hieu va cam xuc va hanh sai ((ve triet) or (cua duc))*.