Perhaps you should try some spelling variations:
trinh thuat » trinh luat, trinh chat, trinh thuy
trinh thiet » trinh viet, trinh thi
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
trinh thuc » trinh tu, trinh thi
nhung cong » dung cong, thong cong, hang cong
cong dan » cong san, cong tan, huong dan
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 thiet))) or (trinh thuc)) nhung 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 thiet))) OR (trinh thuc)) nhung 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 thiet))) or (trinh thuc)) nhung cong dan phan tap".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - hanh ((((trinh thuat) OR (trinh thiet))) or (trinh thuc)) nhung cong dan phan tap*.