Perhaps you should try some spelling variations:
khang cong » hang cong, thanh cong, dang cong
hoc thieu » toc thieu, hoc hien
tranh van » tran van, trinh van, thanh van
van khang » van khanh, van thanh, van quang
ho chieu » theo chieu, doi chieu, mot chieu
cong dan » cong san, cong tan, huong dan
toan cau » toan ban, toan tap, toan tai
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) OR (hoc thieu)) xanh - canh tranh van khang cong dan ((toan cau) OR (toan cao))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (hoc thieu)) xanh - canh tranh van khang cong dan ((toan cau) OR (toan cao))".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (hoc thieu)) xanh - canh tranh van khang cong dan ((toan cau) OR (toan cao))*.