Perhaps you should try some spelling variations:
dang phuong » bang phuong, dung phuong, dan phuong
thieu sach » chieu sach, thien hach, hieu cach
phuong dan » phuong danh, phuong doan, huong dan
phan thanh » pham thanh, ban thanh, van thanh
dan phan » doan phan, dan chan, van phan
hieu ca » hieu cac, hieu cua, hieu va
sinh va » sinh vat, tinh va, dinh van
va dang » van dang, va nang, va lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu sach) or (hieu ca)) - nhan sinh va dang phuong dan phan thanh~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sach) OR (hieu ca)) - nhan sinh va dang phuong dan phan thanh.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sach) or (hieu ca)) - nhan sinh va dang phuong dan phan thanh*.