Perhaps you should try some spelling variations:
truong chung » truong trung
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
nhanh lang » nhanh quang, nhanh thang, nhan dang
cua nhan » ca nhan, cua ngan, cua nha
toan cau » toan cao, toan tap, toan tai
toan ban » van ban
cua han » cua hang, cua phan, cua ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chieu sach - nhanh lang ((cua han) or (cua nhan)) truong chung ((toan cau) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - nhanh lang ((cua han) OR (cua nhan)) truong chung ((toan cau) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - nhanh lang ((cua han) or (cua nhan)) truong chung ((toan cau) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - nhanh lang ((cua han) or (cua nhan)) truong chung ((toan cau) OR (toan ban))*.