Perhaps you should try some spelling variations:
hoc chiet » hoc thiet, hoc hien, hoc viet
hoc nhiet » hoc thiet, hoc nghien, hoc hien
tranh cua » doanh cua, manh cua
cua nhung » va nhung
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
than ban » thanh ban, toan ban, than man

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc chiet) OR (hoc nhiet)) tach - canh tranh cua nhung ((cong dan) OR (cong tan)) than ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc chiet) OR (hoc nhiet)) tach - canh tranh cua nhung ((cong dan) OR (cong tan)) than ban".
• Adding a wildcard symbol may retrieve word variants: ((hoc chiet) OR (hoc nhiet)) tach - canh tranh cua nhung ((cong dan) OR (cong tan)) than ban*.