Perhaps you should try some spelling variations:
hanh thang » nhanh thang, thanh thang, hanh trang
hieu quan » lieu quan, thien quan, lien quan
nang cong » nang song, dang cong, bang cong
thang da » thang va, tang da, thanh dat
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap
da nang » cam nang, kha nang, cao 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 (hieu qua)) - hanh thang da nang cong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu quan) OR (hieu qua)) - hanh thang da nang cong dan toan cau.
• Adding a wildcard symbol may retrieve word variants: ho ((hieu quan) or (hieu qua)) - hanh thang da nang cong dan toan cau*.