Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
chieu sach » chinh sach, chiet tach, chieu sang
tuong tham » luong tham, tuong tac, chong tham
trong thai » trong thi, trong thoi, trong thuat
nhung dung » phuong dung, ung dung, thong dung
ho chieu » theo chieu, hoc thieu, doi chieu
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap

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 tham) OR (trong thai)) ((nhung dung) or (nhung phuong)) dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - hanh ((tuong tham) OR (trong thai)) ((nhung dung) OR (nhung phuong)) dan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - hanh ((tuong tham) OR (trong thai)) ((nhung dung) or (nhung phuong)) dan toan cao".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - hanh ((tuong tham) OR (trong thai)) ((nhung dung) or (nhung phuong)) dan toan cao*.