Perhaps you should try some spelling variations:
chat triet » chet triet, phat trien, chat thien
van chat » cao chat
hanh van » thanh van, khanh van, hanh va
vu cham » va cham, vu kham, tu cham
va hanh » van hanh, va thanh, va danh
su sach » so sach, vu sach
dai moi » doi moi, dai hoi
mai hoi » mai khoi, dai hoi, lai hoi
y lang » o lang, _ lang, tay lang
xuc va » duc va, tuc va, luc va
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach y lang ((mai hoi) or (dai moi)). hieu ((ve cam) or (vu cham)) xuc va hanh van chat triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y lang ((mai hoi) OR (dai moi)). hieu ((ve cam) OR (vu cham)) xuc va hanh van chat triet.
• Adding a wildcard symbol may retrieve word variants: su sach y lang ((mai hoi) or (dai moi)). hieu ((ve cam) or (vu cham)) xuc va hanh van chat triet*.