Perhaps you should try some spelling variations:
thang cong » thanh cong, thang long, thong cong
trinh van » trinh quan, trinh toan, dinh van
trinh han » trinh quan
hoc vien » hoc hien, hoc viet, hoc tieng
cong van » cong vang, cong san, song van
van quan » van ban
quan cau » quang cao, toan cau, quan ha

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc vien bach - hanh ((trinh van) or (trinh han)) thang cong van quan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc vien bach - hanh ((trinh van) OR (trinh han)) thang cong van quan cau*.