Perhaps you should try some spelling variations:
dau tieng » dau tien, cau tieng, day tieng
cua triet » cua viet, su triet, va triet
cau tren » cu tren, dau tren, ca tren
sach da » sach dao, sach dat, sach dau
va hanh » van hanh, va thanh, va danh
su sach » so sach, vu sach
cau luc » cau truc, cau phuc
van cau » van dau, van hau, van chat
thi van » thi lan, thi hanh, thi nang
nang xa » nang x, lang xa, nang ma
da nang » cam nang, kha nang, cao nang
luc va » duc va, tuc va, loc va

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 da nang xa hoi. thi van cau luc va hanh vi ((cua triet) or (((cau tren) or (dau tieng))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach da nang xa hoi. thi van cau luc va hanh vi ((cua triet) OR (((cau tren) OR (dau tieng)))).
• Adding a wildcard symbol may retrieve word variants: su sach da nang xa hoi. thi van cau luc va hanh vi ((cua triet) or (((cau tren) or (dau tieng))))*.