Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
phuong bac » phuong cach, phuong tay, phuong mai
hiem ngan » kim ngan, viem gan
tranh cua » doanh cua, manh cua
cua thong » cua thuong, cua khong, cua tong
thong cuc » thong cua, tong cuc, thong cung
thong cac » trong cac, phong cach, thong cua
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 cuc) OR (thong cac)) phuong bac~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hiem ngan - hanh tranh cua thong ((thong cuc) OR (thong cac)) phuong bac".
• Adding a wildcard symbol may retrieve word variants: hoc hiem ngan - hanh tranh cua thong ((thong cuc) OR (thong cac)) phuong bac*.