Perhaps you should try some spelling variations:
phuong doan » phuong hoang, huong dan, phuong hoa
phuong loan » phuong lan, huong loan, phuong hoang
chieu sach » chinh sach, chiet tach, chieu sang
hoc chieu » hoc thieu, ho chieu, hoc hien
trung cap » truong cao, trung tam
truong ca » truong cao, truong va, trong ca
than ban » thanh ban, toan ban, than man

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 - hanh ((trung cap) or (truong ca)) nhung ((phuong doan) OR (phuong loan)) than ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh ((trung cap) OR (truong ca)) nhung ((phuong doan) OR (phuong loan)) than ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc chieu sach - hanh ((trung cap) or (truong ca)) nhung ((phuong doan) OR (phuong loan)) than ban".
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh ((trung cap) or (truong ca)) nhung ((phuong doan) OR (phuong loan)) than ban*.