Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
hiem ngan » kim ngan
cua thong » cua thuong, cua tong, suat thong
cua khong » hua khong, cua phuong, cua thuong
thong van » trong van, thong va, thong quan
van phong » van dong, hai phong
phong cau » thong cau, phong cac, phong cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hiem ngan) or (viem gan)) - hanh tranh ((cua thong) OR (cua khong)) thong van phong cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hiem ngan) OR (viem gan)) - hanh tranh ((cua thong) OR (cua khong)) thong van phong cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hiem ngan) or (viem gan)) - hanh tranh ((cua thong) OR (cua khong)) thong van phong cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((hiem ngan) or (viem gan)) - hanh tranh ((cua thong) OR (cua khong)) thong van phong cau*.