Perhaps you should try some spelling variations:
thanh hoa » thanh pho
cua viet » ca viet, hoa viet, cua vat
sach tay » xach tay, sach hay, sach tai
sach nay » sach hay, sach vay, sach nang
va thanh » gia thanh, ban thanh, va tinh
hoa cua » hoa chat, hoa xuat
lang xa » lang ha, dang xay, lang van
va cao » va cac, va co, va dao
xuc va » duc va, tuc va, luc va
va cam » va cham, va cac, va cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach tay) or (sach nay)) lang xa hoi. hieu ((va cam) OR (va cao)) xuc va thanh hoa cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach tay) OR (sach nay)) lang xa hoi. hieu ((va cam) OR (va cao)) xuc va thanh hoa cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach tay) or (sach nay)) lang xa hoi. hieu ((va cam) OR (va cao)) xuc va thanh hoa cua viet".
• Adding a wildcard symbol may retrieve word variants: tu ((sach tay) or (sach nay)) lang xa hoi. hieu ((va cam) OR (va cao)) xuc va thanh hoa cua viet*.