Perhaps you should try some spelling variations:
phan dung » phan ung, phan dang, chan dung
cong thuc » cong tac
thuc phan » thuc pham, thu phan, thuc chan
phan phan » phap phan, phan phat, than phan
ho chieu » theo chieu, hoc thieu, mot chieu
dung dan » dung dat, dung san, tung dan
dan cong » dang cong, van cong, dan dong
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: ((ho chieu) OR (toc thieu)) sach - phan dung dan cong thuc phan phan cap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (toc thieu)) sach - phan dung dan cong thuc phan phan cap".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (toc thieu)) sach - phan dung dan cong thuc phan phan cap*.