Perhaps you should try some spelling variations:
nhung chong » nhung cong, nhung phong, nhung phuong
hanh trinh » canh tranh, hanh chinh
lanh tranh » canh tranh, lan tranh, sach tranh
nhung hong » nhung huong, nhung phong, nhung cong
hieu cach » hieu cac, chieu sach, hieu ca
hoc hieu » hoc thieu, hoc hien, doc hieu
van tuan » van quan, van ban, anh tuan
tuan cu » tuan tu, quan cua, tuan thu

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 cach - ((lanh tranh) or (hanh trinh)) cua ((nhung hong) OR (nhung chong)) van tuan cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu cach - ((lanh tranh) OR (hanh trinh)) cua ((nhung hong) OR (nhung chong)) van tuan cu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu cach - ((lanh tranh) or (hanh trinh)) cua ((nhung hong) OR (nhung chong)) van tuan cu".
• Adding a wildcard symbol may retrieve word variants: hoc hieu cach - ((lanh tranh) or (hanh trinh)) cua ((nhung hong) OR (nhung chong)) van tuan cu*.