Perhaps you should try some spelling variations:
gianh lai » gian lan
toc sach » hoc sach, doc sach, thuoc sach
va gianh » va gian, van giang, va giai
bang tay » ban tay, bang may, mang tay
cham duc » pham duc, pham duy, phan duc
lai cua » dai cua, hai cua, lai chau
hieu ve » hieu va, hieu van
tay hoi » tay ho, tao hoi, tay thai
ty bang » ty xang, te bang, ty hang
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)) ty bang tay hoi. hieu ve ((cham duc) OR (cham soc)) va gianh lai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ty bang tay hoi. hieu ve ((cham duc) OR (cham soc)) va gianh lai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (toc sach)) ty bang tay hoi. hieu ve ((cham duc) OR (cham soc)) va gianh lai cua te".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (toc sach)) ty bang tay hoi. hieu ve ((cham duc) OR (cham soc)) va gianh lai cua te*.