Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
nhung cong » dung cong, thong cong, hang cong
hien danh » thien danh, hien hanh, hien nhanh
tranh va » tranh van, trang va, trinh va
cong dan » cong san, cong tan, huong dan
toan tap » toan ban
toan cao » toan ban

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 danh - hanh tranh va nhung cong dan ((toan tap) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien danh - hanh tranh va nhung cong dan ((toan tap) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: hoc hien danh - hanh tranh va nhung cong dan ((toan tap) or (toan cao))*.