Perhaps you should try some spelling variations:
cong cong » cong dong, trong cong, dung cong
ho trieu » mot trieu, 25 trieu, 30 trieu
trang ha » trang va, trung ha, tang ha
cong van » cong vang, cong san, song van
van luan » van quan, van tuan, von luan
luan ban » luan van, luan san, luan han
tang ma » mang may, tang van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho trieu tinh - hanh ((trang ha) OR (tang ma)) cong cong van luan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho trieu tinh - hanh ((trang ha) OR (tang ma)) cong cong van luan ban".
• Adding a wildcard symbol may retrieve word variants: ho trieu tinh - hanh ((trang ha) OR (tang ma)) cong cong van luan ban*.