Perhaps you should try some spelling variations:
trinh luan » trinh luat, trinh quan, trinh han
hanh trinh » canh tranh, hanh chinh
luan chung » luan chinh
hien hanh » dieu hanh
cong vang » cong lang, cong quang, cong ngang
tien anh » tieng anh, tien manh, dien anh
cong van » cong san, song van, cong tan
tan tap » toan tap, han tap, tan tat

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((tien anh) or (hien hanh)) - hanh trinh luan chung ((cong van) or (cong vang)) tan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((tien anh) OR (hien hanh)) - hanh trinh luan chung ((cong van) OR (cong vang)) tan tap.
• Adding a wildcard symbol may retrieve word variants: hoc ((tien anh) or (hien hanh)) - hanh trinh luan chung ((cong van) or (cong vang)) tan tap*.