Perhaps you should try some spelling variations:
vien nganh » vien thanh
hanh trang » thanh trung, canh tranh, hanh trinh
nhung cong » dung cong, thong cong, hang cong
hieu xanh » chieu xanh, hieu manh, hieu nganh
trang cua » tranh cua, tang cua, trung cua
cua nhung » va nhung
manh toan » thanh toan, anh tuan

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((hieu xanh) or (vien nganh)) - hanh trang cua nhung cong ((manh toan) or (tinh toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu xanh) OR (vien nganh)) - hanh trang cua nhung cong ((manh toan) OR (tinh toan)) cau.
• Adding a wildcard symbol may retrieve word variants: doc ((hieu xanh) or (vien nganh)) - hanh trang cua nhung cong ((manh toan) or (tinh toan)) cau*.