Perhaps you should try some spelling variations:
hanh thang » nhanh thang, thanh thang, hanh trang
thien quan » trien quang, lien quan, thien van
hieu quan » hieu qua, lieu quan, lien quan
nang cong » nang song, dang cong, bang cong
thang va » hang va, trang va, thong va
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
chan ban » can ban, chat ban, chan nan
va nang » van nang, da nang, cam nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hieu quan) OR (thien quan)) - hanh thang va nang cong dan chan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu quan) OR (thien quan)) - hanh thang va nang cong dan chan ban".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu quan) OR (thien quan)) - hanh thang va nang cong dan chan ban*.