Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
hanh truong » anh truong, manh truong, chinh truong
chieu sach » chinh sach, chiet tach, chieu sang
hanh trong » hanh trang, anh trong, hinh trong
phuong van » phung van, phong van, phuong lan
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 ((chieu sach) or (cuu tinh)) - ((hanh truong) OR (hanh trong)) cua nhung phuong van toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sach) OR (cuu tinh)) - ((hanh truong) OR (hanh trong)) cua nhung phuong van toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu sach) or (cuu tinh)) - ((hanh truong) OR (hanh trong)) cua nhung phuong van toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sach) or (cuu tinh)) - ((hanh truong) OR (hanh trong)) cua nhung phuong van toan cao*.