Perhaps you should try some spelling variations:
cong ngang » cong nhan, cong quang, cong lang
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
cua nhung » va nhung
hoc lieu » hoc dieu, hoc tieu, ho lieu
hoc sieu » hoc dieu, hoc thieu, hoc hien
tinh cua » trinh cua, sinh cua, tinh chat
cong san » cong tac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc lieu) or (hoc sieu)) tinh - hanh tinh cua nhung ((cong san) or (cong ngang)) van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc lieu) OR (hoc sieu)) tinh - hanh tinh cua nhung ((cong san) OR (cong ngang)) van ban.
• Adding a wildcard symbol may retrieve word variants: ((hoc lieu) or (hoc sieu)) tinh - hanh tinh cua nhung ((cong san) or (cong ngang)) van ban*.