Perhaps you should try some spelling variations:
hiem ngan » kim ngan, viem gan
trinh cua » trinh luat, trinh quan, trinh luan
phong cau » thong cau, phong cac, phong cai
hoc hiem » hoc hien, hoc thieu, hoc thiet
tinh cua » sinh cua, tinh chat, tranh cua
thong va » thong cua, truong va, thong qua
va phong » van phong, va phuong, va thong

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 ((trinh cua) OR (tinh cua)) thong thong va phong cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hiem ngan - hanh ((trinh cua) OR (tinh cua)) thong thong va phong cau*".