Perhaps you should try some spelling variations:
gianh lai » gian lan
toc sach » hoc sach, doc sach, thuoc sach
kho tang » cao tang
va gianh » va gian, van giang, va giai
lai cua » dai cua, hai cua, lai chau
tang xa » trang xa, tang ma, lang xa
ve cac » vien cac
cua te » cua tu

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) OR (toc sach)) kho tang xa hoi. hieu ((ve cac) or (va cac)) duc va gianh lai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) kho tang xa hoi. hieu ((ve cac) OR (va cac)) duc va gianh lai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) kho tang xa hoi. hieu ((ve cac) or (va cac)) duc va gianh lai cua te".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (toc sach)) kho tang xa hoi. hieu ((ve cac) or (va cac)) duc va gianh lai cua te*.