Perhaps you should try some spelling variations:
nhanh tranh » nhanh thanh, canh tranh, hanh trinh
tan nhanh » tai nhanh, tan nhan, tan thanh
tranh cua » doanh cua, manh cua
cua triet » cua viet, su triet, va triet
sach thu » sach thue, sach thieu, sach tham
sach ty » sach y, sach tu, xach tay
lang xa » lang ha, dang xay, lang van
qua cac » cua cac
cac duc » cac du, cao duc, cac dac

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 ty) or (sach thu)) lang xa hoi. hieu qua cac duc tan nhanh tranh cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ty) OR (sach thu)) lang xa hoi. hieu qua cac duc tan nhanh tranh cua triet.
• Adding a wildcard symbol may retrieve word variants: su ((sach ty) or (sach thu)) lang xa hoi. hieu qua cac duc tan nhanh tranh cua triet*.