Perhaps you should try some spelling variations:
phap phan » phap phat, phap hoan, phap luan
doc hieu » hoc thieu, hoc hien
phan tuc » phan thuc, phan tu, phan duc
tuc hanh » thuc hanh, tuc thanh, duc hanh
cong va » dong va, cong ha, cong tac
va phap » va phat, ban phap
hanh va » hang va, hanh vi

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)) sang - thanh cong va phap phan tuc hanh va~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (toc thieu)) sang - thanh cong va phap phan tuc hanh va*.