Perhaps you should try some spelling variations:
truong phuong » truong chung, truong trung, dung phuong
nhung huong » nhung phuong, nhung tuong, nhung cong
chieu sach » chinh sach, chiet tach, chieu sang
hanh tuong » manh tuong, hanh trong, hanh tung
tuong tac » cong tac, luong tai, tuong lai
ho chieu » theo chieu, hoc thieu, doi chieu
toan cao » toan ban
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sach - hanh tuong tac ((nhung huong) or (truong phuong)) dan ((toan cao) OR (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh tuong tac ((nhung huong) OR (truong phuong)) dan ((toan cao) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh tuong tac ((nhung huong) or (truong phuong)) dan ((toan cao) OR (toan tap))".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh tuong tac ((nhung huong) or (truong phuong)) dan ((toan cao) OR (toan tap))*.