Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
hanh tranh » canh tranh, hanh trinh, hanh trang
phuong van » phung van, phong van, phuong lan
hoc thien » hoc hien, hoc thieu, hoc tien
hoc thiet » hoc thieu, hoc thuyet, hoc hien
tranh cua » doanh cua, manh cua
cua nhung » va nhung
van toan » van tuan, van tan, van thanh
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thien) OR (hoc thiet)) tinh - hanh tranh cua nhung phuong van toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thien) OR (hoc thiet)) tinh - hanh tranh cua nhung phuong van toan cao".
• Adding a wildcard symbol may retrieve word variants: ((hoc thien) OR (hoc thiet)) tinh - hanh tranh cua nhung phuong van toan cao*.