Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hanh trang » thanh trung, canh tranh, hanh trinh
hieu manh » chieu xanh, hieu nganh, hien hanh
trang cua » tranh cua, tang cua, trung cua
cua thong » cua thuong, cua khong, cua tong
cong dan » cong san, cong tan, huong dan
tvan tai » toan tai, tan tai, tuan tai
van tai » von tai, van tuan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hieu manh) or (dieu hanh)) - hanh trang cua thong cong dan ((tvan tai) or (van tai))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (dieu hanh)) - hanh trang cua thong cong dan ((tvan tai) OR (van tai)).
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (dieu hanh)) - hanh trang cua thong cong dan ((tvan tai) or (van tai))*.