Perhaps you should try some spelling variations:
may trinh » may tinh, lap trinh, quy trinh
trinh dai » trinh tai, trinh di, trinh da
thu sach » tu sach, thuat sach, thuoc sach
sach tay » xach tay, sach hay, sach nay
tay lang » tai lang, tay tang, tay quang
lang xa » lang ha, dang xay, lang van
cac toc » cac toi, cac nuoc, cac thoi
toc may » toc tay, hoc may, toc giay
cua tu » cua tuc, cua su, cua cu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach tay lang xa hoi. ((thieu nien) or (thien nhien)) cac toc may trinh dai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach tay lang xa hoi. ((thieu nien) OR (thien nhien)) cac toc may trinh dai cua tu.
• Adding a wildcard symbol may retrieve word variants: thu sach tay lang xa hoi. ((thieu nien) or (thien nhien)) cac toc may trinh dai cua tu*.