Perhaps you should try some spelling variations:
cua triet » su triet, va triet
danh dai » danh dau, danh di, danh sai
cua viet » ca viet, hoa viet, cua vat
te sach » toc sach
lang xa » lang ha, dang xay, lang van
hieu va » hieu qua
va danh » va dinh, va dan, va hanh
sach o » sach lo, sac o, sach y
o lang » hoa lang, hoi lang
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 sach o lang xa hoi. ((hieu va) OR (lieu va)) cam xuc va danh dai ((cua triet) OR (cua viet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach o lang xa hoi. ((hieu va) or (lieu va)) cam xuc va danh dai ((cua triet) OR (cua viet))~".
• Adding a wildcard symbol may retrieve word variants: te sach o lang xa hoi. ((hieu va) or (lieu va)) cam xuc va danh dai ((cua triet) OR (cua viet))*.