Perhaps you should try some spelling variations:
luan nhung » luan chung, luan hung, quan nhung
hoc thuyet » hoc chuyen
nhung cong » dung cong, thong cong, hang cong
trinh quan » tinh quang, trinh luat, trinh han
hanh dung » thanh dung, anh dung, hanh dong
quan ban » quang ban, qua ban, quan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thuyet) or (hoc hien)) tach - hanh dung luan nhung cong trinh quan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thuyet) OR (hoc hien)) tach - hanh dung luan nhung cong trinh quan ban.
• Adding a wildcard symbol may retrieve word variants: ((hoc thuyet) or (hoc hien)) tach - hanh dung luan nhung cong trinh quan ban*.