Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
hieu manh » chieu xanh, hieu nganh, dieu hanh
hoc hieu » hoc thieu, hoc hien, doc hieu
cua dung » cua dong, qua dung, cua rung
cua dang » cua cong, cua ban
san ran » san roman, van ranh, san luan
san van » tan van, luan van, tran van

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 ((cua dung) or (cua dang)) cong ((san ran) OR (san van)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - hanh trang ((cua dung) OR (cua dang)) cong ((san ran) OR (san van)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu manh - hanh trang ((cua dung) or (cua dang)) cong ((san ran) OR (san van)) cau".
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - hanh trang ((cua dung) or (cua dang)) cong ((san ran) OR (san van)) cau*.