Perhaps you should try some spelling variations:
nhung phong » nhung phuong, nhung chong, nung phong
hanh tranh » canh tranh, hanh trinh, hanh trang
hoc chieu » ho chieu, hoc hien, hoc dieu
hoc thieu » toc thieu, hoc hien
tranh cua » doanh cua, manh cua
cua nhung » va nhung
phong van » phung van, thong van, phong va
tan cao » toan cao, tay cao, tan ca
tao cao » bao cao, toan cao

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

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