Perhaps you should try some spelling variations:
cong hoang » cong hoan, thong hoang, vuong hoang
hanh manh » hanh mang, lanh manh, hoang manh
hoang van » hang va
manh cua » doanh cua, ban cua
luan ban » luan van, luan han, luat ban
luan san » luan van, luan hoan, luan phan
ho hieu » ho chieu, hoi hieu, nho hieu
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho hieu) or (doi chi)) lang - hanh manh cua cong hoang van ((luan ban) OR (luan san))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho hieu) OR (doi chi)) lang - hanh manh cua cong hoang van ((luan ban) OR (luan san)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho hieu) or (doi chi)) lang - hanh manh cua cong hoang van ((luan ban) OR (luan san))".
• Adding a wildcard symbol may retrieve word variants: ((ho hieu) or (doi chi)) lang - hanh manh cua cong hoang van ((luan ban) OR (luan san))*.