Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
hiem ngan » kim ngan, viem gan
tranh cua » doanh cua, manh cua
cua thong » cua thuong, cua khong, cua tong
thong van » trong van, thong va, thong quan
phong cau » thong cau, phong cac, phong cai
hoc hiem » hoc hien, hoc thieu, hoc thiet

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