Perhaps you should try some spelling variations:
thcs phan » than phan, thu phan, thai phan
doc hieu » hoc thieu, hoc hien
phan dan » phan dang, phan dau, nhan dan
dan dung » van dung, tin dung, ap dung
dung ung » dung cong
thu thcs » thpt thcs, thu tuc, thu thap
phan cap » phan lap, phan tap, phan cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc hieu) or (toc thieu)) sach - phan dan dung ung thu thcs phan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (toc thieu)) sach - phan dan dung ung thu thcs phan cap.
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) or (toc thieu)) sach - phan dan dung ung thu thcs phan cap*.