Perhaps you should try some spelling variations:
thiet thanh » thien thanh, thi thanh, viet thanh
hoc thiet » hoc thieu, hoc thuyet, hoc hien
tranh cua » doanh cua, manh cua
cua khong » hua khong, cua phuong, cua thuong
cong hoan » cong hoa, cong ha, cong tan
cong san » cong tac
dong hoa » dong hoc, dong co
phan dau » phan tu, hang dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thiet thanh - canh tranh cua khong ((cong san) or (((cong hoan) OR (dong hoa)))) phan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thiet thanh - canh tranh cua khong ((cong san) OR (((cong hoan) OR (dong hoa)))) phan dau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thiet thanh - canh tranh cua khong ((cong san) or (((cong hoan) OR (dong hoa)))) phan dau".
• Adding a wildcard symbol may retrieve word variants: hoc thiet thanh - canh tranh cua khong ((cong san) or (((cong hoan) OR (dong hoa)))) phan dau*.