Perhaps you should try some spelling variations:
hien tinh » khien tinh, thien tinh, dien tinh
bien tinh » bi tinh, yen tinh, diep tinh
hanh tang » hanh trang, anh tang, hanh mang
dung cong » dung trong
cong doan » cong dan, cong hoan, dong doanh
tang cua » mang cua, hang cua, tang luan
cua dung » cua dang, cua dong, qua dung
phan cac » nhan cach, phan dau, phan van
phan lap » phan dau

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 tinh) OR (bien tinh)) - hanh tang cua dung cong doan ((phan cac) or (phan lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien tinh) OR (bien tinh)) - hanh tang cua dung cong doan ((phan cac) OR (phan lap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien tinh) OR (bien tinh)) - hanh tang cua dung cong doan ((phan cac) or (phan lap))".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien tinh) OR (bien tinh)) - hanh tang cua dung cong doan ((phan cac) or (phan lap))*.