Perhaps you should try some spelling variations:
nhanh tinh » nhanh thanh, nhan sinh
hanh trinh » canh tranh, hanh chinh
quan nhung » qua nhung, cua nhung, luan chung
nhung cong » dung cong, thong cong, hang cong
che chinh » te chinh
cong vang » cong lang, cong quang, cong ngang
than cao » thai cao, than cap, than sao
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: che chinh sach - ((nhanh tinh) OR (hanh trinh)) quan nhung cong vang ((than cao) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: che chinh sach - ((nhanh tinh) OR (hanh trinh)) quan nhung cong vang ((than cao) OR (toan cao)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "che chinh sach - ((nhanh tinh) OR (hanh trinh)) quan nhung cong vang ((than cao) or (toan cao))".
• Adding a wildcard symbol may retrieve word variants: che chinh sach - ((nhanh tinh) OR (hanh trinh)) quan nhung cong vang ((than cao) or (toan cao))*.