Perhaps you should try some spelling variations:
gianh dai » gianh lai, gian dan, giang day
va gianh » va gian, van giang, va giai
su sach » so sach, vu sach
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
cac hoc » cach hoc, bac hoc, cac toc
y lang » o lang, _ lang, tay lang
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: su sach y lang xa hoi. hieu ve ((cac hoc) or (cac hop)) va gianh dai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y lang xa hoi. hieu ve ((cac hoc) OR (cac hop)) va gianh dai cua te.
• Adding a wildcard symbol may retrieve word variants: su sach y lang xa hoi. hieu ve ((cac hoc) or (cac hop)) va gianh dai cua te*.