Perhaps you should try some spelling variations:
hoc thieu » toc thieu
canh manh » lanh manh, canh tranh, cach mang
bang cong » dang cong, bang song, hang cong
luan phan » luan van
luan hoan » luan van
manh cua » doanh cua, ban cua
cua bang » chua bang, cua ban, cua dang

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 (hoc hien)) xanh - canh manh cua bang cong ((luan phan) OR (luan hoan)) dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (hoc hien)) xanh - canh manh cua bang cong ((luan phan) OR (luan hoan)) dau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) or (hoc hien)) xanh - canh manh cua bang cong ((luan phan) OR (luan hoan)) dau*".