Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh trang » thanh trung, hanh trinh, minh trang
hieu manh » chieu xanh, hieu nganh, dieu hanh
cua nhung » va nhung
van thanh » ban thanh, van tuan
hoc hieu » hoc thieu, hoc hien, doc hieu
van than » van thang, van tuan, van phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu manh - ((hanh trang) OR (canh tranh)) cua nhung cong ((van than) or (van thanh)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - ((hanh trang) OR (canh tranh)) cua nhung cong ((van than) OR (van thanh)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu manh - ((hanh trang) OR (canh tranh)) cua nhung cong ((van than) or (van thanh)) cau".
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - ((hanh trang) OR (canh tranh)) cua nhung cong ((van than) or (van thanh)) cau*.