Perhaps you should try some spelling variations:
"te sach nganh ki thuat do hoc" » "te sach ngan ki thuat do hoc", "te sach tranh ki thuat do hoc", "te cac nganh ki thuat do hoc", "te sach nganh ky thuat do hoc", "te sach nganh ke thuat do hoc", "te sach nganh vi thuat do hoc", "te sach nganh ki thuat o hoc", "toc sach nganh ki thuat do hoc", "te sach nganh ki thuat co hoc", "te sach nganh ki thuat do hoa", "te sach nganh ki thuat du hoc"
"thu sach nganh xay thuat van hoc" » "thu sach ngan xay thuat van hoc", "thu sach tranh xay thuat van hoc", "thu cac nganh xay thuat van hoc", "thu sach nganh mac thuat van hoc", "thu sach nganh y thuat van hoc", "thu sach nganh ma thuat van hoc", "thu sach nganh ky thuat van hoc", "thu sach nganh my thuat van hoc", "thu sach nganh va thuat van hoc", "thu sach nganh xay thuat san hoc", "thu sach nganh xay thuat va hoc", "thu sach nganh xay thuat ban hoc", "tu sach nganh xay thuat van hoc", "thuat sach nganh xay thuat van hoc", "thuoc sach nganh xay thuat van hoc", "thu sach nganh xay thuat van hoa"

Try widening your search to All Fields.

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 nganh ki thuat do hoc") or ("thu sach nganh xay thuat van hoc"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("te sach nganh ki thuat do hoc") OR ("thu sach nganh xay thuat van hoc")).
• Removing quotes may allow a broader search: (( te sach nganh ki thuat do hoc ) or ( thu sach nganh xay thuat van hoc )).
• Adding a wildcard symbol may retrieve word variants: (("te sach nganh ki thuat do hoc") or ("thu sach nganh xay thuat van hoc"))*.