Perhaps you should try some spelling variations:
trien nganh » trien nhan, tin nganh, trien doanh
thanh trung » thanh tung
vien nganh » vien thanh
nhung cong » dung cong, thong cong, hang cong
trung va » truong va, trang va, trung ha
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cao » toan cao, thai cao, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((trien nganh) OR (vien nganh)) - thanh trung va nhung cong dan than cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((trien nganh) OR (vien nganh)) - thanh trung va nhung cong dan than cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((trien nganh) OR (vien nganh)) - thanh trung va nhung cong dan than cao*.