Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cau tren » cu tren, dau tren, ca tren
sach thu » sach thue, sach thieu, sach tham
duc van » duc va, duc tan, duc manh
van anh » van thanh, tuan anh, van minh
sach ty » sach y, sach tu, xach tay
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
anh di » danh di, xanh di, anh d
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ty) or (sach thu)) nang x hoi. hieu ve pham duc van anh di ((cua triet) or (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach thu)) nang x hoi. hieu ve pham duc van anh di ((cua triet) OR (cau tren)).
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) or (sach thu)) nang x hoi. hieu ve pham duc van anh di ((cua triet) or (cau tren))*.