Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
sach ky » sac ky, sach y, sach kem
sach ty » sach y, sach tu, sach thu
tang xa » trang xa, tang ma, lang xa
va hoc » van hoc
va dan » ca dan, va dao, va dau
ca cua » co cua
nuoc » quoc, duoc, ngoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sach ky) OR (sach ty)) tang xa hoi. lieu va hoc nuoc va dan ca cua viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ky) OR (sach ty)) tang xa hoi. lieu va hoc nuoc va dan ca cua viet".
• Adding a wildcard symbol may retrieve word variants: te ((sach ky) OR (sach ty)) tang xa hoi. lieu va hoc nuoc va dan ca cua viet*.