Perhaps you should try some spelling variations:
manh tuong » manh tung, manh cuong, minh tuong
tuong luan » truong luan, tong luan, thong luan
cong chung » cong hung, cong thuong, cong cong
chung than » chung nhan, chung han, cung than
hoc thieu » hoc hien
luan cong » luat cong, luong cong, luan chung
than van » thanh van, tran van, phan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thieu) or (toc thieu)) tinh - manh tuong luan cong chung than van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (toc thieu)) tinh - manh tuong luan cong chung than van ban.
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (toc thieu)) tinh - manh tuong luan cong chung than van ban*.