Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
khanh lai » khanh luan, thanh lap, thanh loi
su triet » su viet, su tien, ve triet
chat tuc » chat xuc, luat tuc, chat huu
xa khanh » xa thanh, van khanh, dat khanh
so sach » so sanh, bo sach, co sach
hieu ve » hieu va, hieu van
ly nang » ky nang, ly hang, ly vang
ve chat » va chat, van chat
y nang » ky nang, v nang, may nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ((y nang) or (ly nang)) ma hoa. hieu ve chat tuc xa khanh lai ((cua triet) OR (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ((y nang) OR (ly nang)) ma hoa. hieu ve chat tuc xa khanh lai ((cua triet) OR (su triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ((y nang) or (ly nang)) ma hoa. hieu ve chat tuc xa khanh lai ((cua triet) OR (su triet))".
• Adding a wildcard symbol may retrieve word variants: so sach ((y nang) or (ly nang)) ma hoa. hieu ve chat tuc xa khanh lai ((cua triet) OR (su triet))*.