Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hoc tieng » hoc hien
tuan bang » tuan dang, tuan hoang, thuat bang
hoc tien » hoc hien, hoc vien, hoc tren
trinh va » trinh van, trinh vat, trinh vi
trinh ve » trinh he, trinh vi, trinh viet
cong dan » cong san, cong tan, huong dan
dan tuan » doan tuan, van tuan, dan luan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc tien) OR (hoc tieng)) anh - canh ((trinh va) or (trinh ve)) nhung cong dan tuan bang~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc tien) OR (hoc tieng)) anh - canh ((trinh va) OR (trinh ve)) nhung cong dan tuan bang.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc tien) OR (hoc tieng)) anh - canh ((trinh va) or (trinh ve)) nhung cong dan tuan bang".
• Adding a wildcard symbol may retrieve word variants: ((hoc tien) OR (hoc tieng)) anh - canh ((trinh va) or (trinh ve)) nhung cong dan tuan bang*.