Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
trinh tinh » trinh kinh, trinh tin, trinh dinh
doi trinh » doc trinh, doi tinh, dong trinh
tang cua » hang cua, tang luan, thong cua
mang cua » manh cua, dung cua, ban cua
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than tap » toan tap, han tap, phan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi trinh tinh - hanh ((tang cua) or (mang cua)) nhung cong dan than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi trinh tinh - hanh ((tang cua) OR (mang cua)) nhung cong dan than tap.
• Adding a wildcard symbol may retrieve word variants: doi trinh tinh - hanh ((tang cua) or (mang cua)) nhung cong dan than tap*.