Perhaps you should try some spelling variations:
ngay truoc » ngay tuoi, nam truoc
truoc nam » truoc dam, truong nam, trung nam
cua triet » su triet, va triet
nam hanh » nam thanh, nam khanh, nam nhanh
cua viet » ca viet, hoa viet, cua vat
te sach » toc sach
sach ky » sac ky, sach y, sach ty
ky tang » ky nang, ky dang, kho tang
va ngay » va nay, tan ngay
ha hoi » hoa hoi, ha noi, va hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky tang ((ha hoi) or (xa hoi)). lieu va ngay truoc nam hanh vi ((cua triet) or (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky tang ((ha hoi) OR (xa hoi)). lieu va ngay truoc nam hanh vi ((cua triet) OR (cua viet)).
• Adding a wildcard symbol may retrieve word variants: te sach ky tang ((ha hoi) or (xa hoi)). lieu va ngay truoc nam hanh vi ((cua triet) or (cua viet))*.