Perhaps you should try some spelling variations:
thuyet tach » thuyet mach, thuyet hach, thuyet xac
hoc thuyet » hoc chuyen
trinh quan » tinh quang, trinh luat, trinh han
nhung cong » dung cong, thong cong, hang cong
trinh cua » tinh cua, trinh luat, trinh luan
cong dan » cong san, cong tan, huong dan
toan cau » toan cao, toan ban, toan tai
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: hoc thuyet tach - hanh ((trinh cua) or (trinh quan)) nhung cong dan ((toan cau) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thuyet tach - hanh ((trinh cua) OR (trinh quan)) nhung cong dan ((toan cau) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: hoc thuyet tach - hanh ((trinh cua) or (trinh quan)) nhung cong dan ((toan cau) or (toan tap))*.