Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
hieu quan » lieu quan, thien quan, lien quan
hanh tang » anh tang, hanh mang, hanh tung
nang cong » nang song, dang cong, bang cong
cong van » cong vang, cong san, song van
van chat » cao chat
chat ban » nhat ban, chat ran, cua ban
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 (hieu qua)) - ((hanh tang) OR (hanh trang)) va nang cong van chat ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu quan) OR (hieu qua)) - ((hanh tang) OR (hanh trang)) va nang cong van chat ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu quan) or (hieu qua)) - ((hanh tang) OR (hanh trang)) va nang cong van chat ban".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu quan) or (hieu qua)) - ((hanh tang) OR (hanh trang)) va nang cong van chat ban*.