Perhaps you should try some spelling variations:
sach ky » sac ky, sach ty, sach kem
tinh ca » tinh cao, tinh cua, tinh va
va tinh » may tinh
coc tuc » coc luc, hoc thuc, doc thuc
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu van
lang xa » lang ha, dang xay, lang van
tuc va » thuc va, truc va, tuc xa
ca cua » co cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu ((sach ky) or (sach y)) lang xa hoi. ((hieu ve) or (hieu va)) coc tuc va tinh ca cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((sach ky) OR (sach y)) lang xa hoi. ((hieu ve) OR (hieu va)) coc tuc va tinh ca cua tre.
• Adding a wildcard symbol may retrieve word variants: vu ((sach ky) or (sach y)) lang xa hoi. ((hieu ve) or (hieu va)) coc tuc va tinh ca cua tre*.