Perhaps you should try some spelling variations:
thien danh » thien anh, thien dang, thien thanh
thanh caco » hanh cac, thanh bac, thanh ca
thiet anh » thien anh, thuyet anh, thich anh
tranh cua » doanh cua, manh cua
dung cong » dung trong
thanh cac » hanh cac, thanh bac, thanh ca
cua dung » cua dang, cua dong, qua dung
cong ban » cong bang, cong san, cong tan

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 anh) OR (thien danh)) - canh tranh cua dung cong ban ((thanh caco) or (thanh cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thiet anh) OR (thien danh)) - canh tranh cua dung cong ban ((thanh caco) OR (thanh cac)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thiet anh) OR (thien danh)) - canh tranh cua dung cong ban ((thanh caco) or (thanh cac))".
• Adding a wildcard symbol may retrieve word variants: hoc ((thiet anh) OR (thien danh)) - canh tranh cua dung cong ban ((thanh caco) or (thanh cac))*.