Perhaps you should try some spelling variations:
hien quang » dien quang, bien quang, hien quan
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
cong danh » cuong danh, cong dan, cong thanh
trinh va » trinh van, trinh vat, trinh ve
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 hien quang - hanh trinh va 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 hien quang - hanh trinh va nhung cong danh ((((tuan ban) OR (luan ban))) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoc hien quang - hanh trinh va nhung cong danh ((((tuan ban) or (luan ban))) or (toan ban))*.