Perhaps you should try some spelling variations:
thanh thang » nhanh thang, thanh thanh, thanh toan
thanh hang » thanh hoang, tranh hang, thanh hung
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
cua nhung » va nhung
hoc dieu » hoc hien
cong van » cong vang, cong san, song van
van bao » van ban, van dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc dieu) OR (hoc thieu)) hanh - ((thanh hang) or (thanh thang)) cua nhung cong van bao cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc dieu) OR (hoc thieu)) hanh - ((thanh hang) OR (thanh thang)) cua nhung cong van bao cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc dieu) OR (hoc thieu)) hanh - ((thanh hang) or (thanh thang)) cua nhung cong van bao cao".
• Adding a wildcard symbol may retrieve word variants: ((hoc dieu) OR (hoc thieu)) hanh - ((thanh hang) or (thanh thang)) cua nhung cong van bao cao*.