Perhaps you should try some spelling variations:
tieu hanh » dieu hanh, tiem hanh, tien hanh
dung cong » dung trong
thang va » hang va, thong va, thanh va
trang va » tran van, hang va
cong van » cong vang, cong san, song van
van tuan » van quan, van ban, anh tuan
tuan ban » tuan bang, toan ban, luan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu hanh - hanh ((thang va) OR (trang va)) dung cong van tuan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu hanh - hanh ((thang va) OR (trang va)) dung cong van tuan ban".
• Adding a wildcard symbol may retrieve word variants: theo tieu hanh - hanh ((thang va) OR (trang va)) dung cong van tuan ban*.