Perhaps you should try some spelling variations:
hien manh » hien hanh, tien manh, hieu manh
trinh van » trinh han, trinh quan, trinh toan
hang cong » dang cong, hang nong, bang cong
trinh va » trinh vat, trinh ve, trinh vi
cong dan » cong san, cong tan, huong dan
dan phan » doan phan, dan chan, van phan
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: hoc hien manh - canh ((trinh va) OR (trinh van)) hang cong dan phan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien manh - canh ((trinh va) OR (trinh van)) hang cong dan phan cau".
• Adding a wildcard symbol may retrieve word variants: hoc hien manh - canh ((trinh va) OR (trinh van)) hang cong dan phan cau*.