Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu xanh » chieu xanh, hieu manh, thien anh
trung tin » trung tinh, trong tin, trang tin
dung cong » dung trong
tien anh » tieng anh, tien manh, dien anh
cong tap » cuong tap, cong tac, cong tan
quan ban » quang ban, qua ban, luan ban
quan van » luan van, quan va, quan 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 ((thieu xanh) or (tien anh)) - thanh trung tin dung cong tap ((quan ban) OR (quan van))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (tien anh)) - thanh trung tin dung cong tap ((quan ban) OR (quan van)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (tien anh)) - thanh trung tin dung cong tap ((quan ban) OR (quan van))".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (tien anh)) - thanh trung tin dung cong tap ((quan ban) OR (quan van))*.