Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
cua triet » su triet, va triet
duc manh » suc manh, duc anh, duc minh
cua viet » ca viet, hoa viet, cua vat
lang xa » lang ha, dang xay, lang van
hieu vo » hieu voi, hieu va, hieu ve
xuc van » duc van, luc van, vuc van
y lang » o lang, _ lang, tay lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach y lang xa hoi. hieu vo co ((xuc van) or (duc manh)) hanh vi ((cua triet) OR (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach y lang xa hoi. hieu vo co ((xuc van) OR (duc manh)) hanh vi ((cua triet) OR (cua viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach y lang xa hoi. hieu vo co ((xuc van) or (duc manh)) hanh vi ((cua triet) OR (cua viet))".
• Adding a wildcard symbol may retrieve word variants: thuoc sach y lang xa hoi. hieu vo co ((xuc van) or (duc manh)) hanh vi ((cua triet) OR (cua viet))*.