Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh trang » thanh trung, canh tranh, hanh trinh
hieu lang » chieu sang, hieu quang, nhieu tang
trang cua » tranh cua, tang cua, trung cua
cua nhung » va nhung
cong danh » cuong danh, cong dan, cong thanh
hoc hieu » hoc thieu, hoc hien, doc hieu
tuan ban » tuan bang, quang ban, thuat ban
luan ban » luan van, luan san, luan han
toan ban » van ban

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

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