Perhaps you should try some spelling variations:
trinh thuat » trinh luat, trinh thiet, trinh chat
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
trinh thuc » trinh tu, trinh thi
nhung cong » thong cong, hang cong, nhung don
dung cong » dung trong
dan phan » doan phan, dan chan, van phan
phan tap » phan lap, han tap, pha tap

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 - hanh ((trinh thuat) or (trinh thuc)) ((nhung cong) OR (dung cong)) dan phan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - hanh ((trinh thuat) OR (trinh thuc)) ((nhung cong) OR (dung cong)) dan phan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - hanh ((trinh thuat) or (trinh thuc)) ((nhung cong) OR (dung cong)) dan phan tap".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - hanh ((trinh thuat) or (trinh thuc)) ((nhung cong) OR (dung cong)) dan phan tap*.