Perhaps you should try some spelling variations:
tinh van » trinh van, dinh van, tinh va
te sach » toc sach
van cua » vang cua, ban cua, dan cua
va tinh » may tinh
ve phan » va phan, ke phan, ve phat
ve pham » vi pham, v pham, ve phat
sach ky » sac ky, sach y, sach ty
lang ha » long ha
lang xa » dang xay, lang van
cua tre » cua te, cuu tre, cua triet

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 ((lang xa) OR (lang ha)) hoi. hieu ((ve pham) or (ve phan)) duc va tinh van cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((lang xa) OR (lang ha)) hoi. hieu ((ve pham) OR (ve phan)) duc va tinh van cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky ((lang xa) OR (lang ha)) hoi. hieu ((ve pham) or (ve phan)) duc va tinh van cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky ((lang xa) OR (lang ha)) hoi. hieu ((ve pham) or (ve phan)) duc va tinh van cua tre*.