Perhaps you should try some spelling variations:
tieu xanh » tieu danh, chieu xanh, dieu hanh
lang cong » dang cong, bang cong, hang cong
trang va » hang va
tran van » luan van
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan ban » van 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 xanh - hanh ((trang va) OR (tran van)) lang cong dan toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo tieu xanh - hanh ((trang va) OR (tran van)) lang cong dan toan ban".
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - hanh ((trang va) OR (tran van)) lang cong dan toan ban*.