Perhaps you should try some spelling variations:
lanh manh » lanh tranh, lan anh, van manh
cua nhung » va nhung
cong vang » cong lang, cong quang, cong ngang
hoc lieu » hoc dieu, hoc sieu, ho lieu
hoc tieu » hoc thieu, hoc dieu, hoc sieu
manh cua » doanh cua, ban cua
cong van » cong san, song van, cong tan

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 tieu)) tinh - lanh manh cua nhung ((cong van) OR (cong vang)) van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc lieu) OR (hoc tieu)) tinh - lanh manh cua nhung ((cong van) OR (cong vang)) van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc lieu) or (hoc tieu)) tinh - lanh manh cua nhung ((cong van) OR (cong vang)) van ban".
• Adding a wildcard symbol may retrieve word variants: ((hoc lieu) or (hoc tieu)) tinh - lanh manh cua nhung ((cong van) OR (cong vang)) van ban*.