Perhaps you should try some spelling variations:
gian lan » gian lang, gian dan, giang van
tu sach » thu sach, te sach, tu cach
bac hoc » bai hoc, bac ho
lan cua » lang cua, ban cua, lai cua
su sach » so sach, vu sach
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
va gian » va gianh, van gian, va giai
cac hoc » cach hoc, cac hop, 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: ((tu sach) OR (su sach)) y lang xa hoi. hieu ve ((cac hoc) or (bac hoc)) va gian lan cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) y lang xa hoi. hieu ve ((cac hoc) OR (bac hoc)) va gian lan cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (su sach)) y lang xa hoi. hieu ve ((cac hoc) or (bac hoc)) va gian lan cua te".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (su sach)) y lang xa hoi. hieu ve ((cac hoc) or (bac hoc)) va gian lan cua te*.