Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hoc thieu » toc thieu, hoc hien
bang luan » hang luan, dung luan, tong luan
tang luan » dung luan
hoc dieu » hoc hien
cong san » cong tac
san than » sang than, san thanh, ban than
than ban » thanh ban, toan ban, than man

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)) xanh - hanh ((bang luan) OR (tang luan)) thong cong san than ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc dieu) OR (hoc thieu)) xanh - hanh ((bang luan) OR (tang luan)) thong cong san than ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc dieu) or (hoc thieu)) xanh - hanh ((bang luan) OR (tang luan)) thong cong san than ban".
• Adding a wildcard symbol may retrieve word variants: ((hoc dieu) or (hoc thieu)) xanh - hanh ((bang luan) OR (tang luan)) thong cong san than ban*.