Perhaps you should try some spelling variations:
trinh cong » trinh dung
hanh tang » hanh trang, anh tang, hanh mang
qua trinh » qua kinh
chao chu » cho chu, cao cho, chao xu
tang qua » tang quan, tang cua, tang quy
cong tan » cong tac, cong san, cong thanh
cua chu » sua chua
tan van » tran van, tang van, luan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((chao chu) OR (cua chu)) xanh - hanh tang qua trinh cong tan van ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((chao chu) OR (cua chu)) xanh - hanh tang qua trinh cong tan van ban*".