Perhaps you should try some spelling variations:
vien thanh » viet thanh, tien thanh, dien thanh
nhung cong » dung cong, thong cong, hang cong
trinh cua » tinh cua, trinh quan, trinh luan
hoc vien » hoc hien, hoc viet, hoc tieng
cong san » cong tac
san toan » van toan, dan toan, 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: hoc vien thanh - hanh ((trinh cua) OR (trinh luat)) nhung cong san toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc vien thanh - hanh ((trinh cua) OR (trinh luat)) nhung cong san toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc vien thanh - hanh ((trinh cua) OR (trinh luat)) nhung cong san toan cao*.