Perhaps you should try some spelling variations:
canh trang » canh tranh, hanh trang, banh trang
doc hieu » toc thieu, hoc thieu
trang ha » trang va, trung ha, tang ha
ha trong » hoa trong, hai trong, hat trong
cong dan » cong san, cong tan, huong dan
toan cau » toan cao, toan tap, toan tai
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc hieu) or (hoc hien)) xanh - canh trang ha trong cong dan ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (hoc hien)) xanh - canh trang ha trong cong dan ((toan cau) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (hoc hien)) xanh - canh trang ha trong cong dan ((toan cau) or (toan ban))*.