Perhaps you should try some spelling variations:
tang luan » dung luan
hang cong » dang cong, hang nong, bang cong
chi lang » thi lan, chi van, hoi lang
tang cua » mang cua, hang cua, thong cua
cong tac » cong ty
tac phan » tac pham, tai phan, tac phat
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chi lang - hanh ((tang cua) OR (tang luan)) hang cong tac phan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chi lang - hanh ((tang cua) OR (tang luan)) hang cong tac phan cau".
• Adding a wildcard symbol may retrieve word variants: ho chi lang - hanh ((tang cua) OR (tang luan)) hang cong tac phan cau*.