Perhaps you should try some spelling variations:
mot chieu » doi chieu, ho chieu
hoc thieu » toc thieu, hoc hien
cong van » cong vang, cong san, song van
van tuan » van quan, van ban, anh tuan
tuan cao » toan cao, juan cao, quang cao
su bang » so bang, vu bang, chu bang
su dang » su dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((mot chieu) or (hoc thieu)) xanh - hanh chinh ((su bang) OR (su dang)) cong van tuan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((mot chieu) OR (hoc thieu)) xanh - hanh chinh ((su bang) OR (su dang)) cong van tuan cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((mot chieu) or (hoc thieu)) xanh - hanh chinh ((su bang) OR (su dang)) cong van tuan cao*".