Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
hanh sinh » hanh tinh, hanh dinh, hinh sinh
cua nhung » va nhung
phong van » phung van, phong va, hong van
thong van » trong van, thong va, thong quan
sinh cua » manh cua, dinh cuu, sinh va
tan cau » toan cau, van cau, tan ca

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien nhanh - hanh sinh cua nhung ((phong van) OR (thong van)) tan cau~".
• Adding a wildcard symbol may retrieve word variants: hoc hien nhanh - hanh sinh cua nhung ((phong van) OR (thong van)) tan cau*.