Perhaps you should try some spelling variations:
thanh trung » thanh tung
hanh trang » canh tranh, hanh trinh, minh trang
hien manh » hien hanh, hieu manh, hien nhanh
tien manh » tien anh, tien thanh, tieng anh
dung cong » dung trong
pha dung » pham dung, phan dung, kha dung
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hien manh) OR (tien manh)) - ((thanh trung) or (hanh trang)) pha dung cong dan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien manh) OR (tien manh)) - ((thanh trung) OR (hanh trang)) pha dung cong dan toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien manh) OR (tien manh)) - ((thanh trung) or (hanh trang)) pha dung cong dan toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien manh) OR (tien manh)) - ((thanh trung) or (hanh trang)) pha dung cong dan toan ban*.