Perhaps you should try some spelling variations:
ve triet » va trien, su triet
vien cac » vien bach, vien dai, vien da
sach ky » sac ky, sach y, sach ty
va hanh » van hanh, va thanh, va danh
su sach » so sach, vu sach
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
le cau » ke cau, le mau, le cap
ve cac » va cac
vi ve » va ve, gi ve, ve ve

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 ky lang xa hoi. hieu ((le cau) or (((ve cac) or (vien cac)))) duc va hanh vi ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky lang xa hoi. hieu ((le cau) OR (((ve cac) OR (vien cac)))) duc va hanh vi ve triet.
• Adding a wildcard symbol may retrieve word variants: su sach ky lang xa hoi. hieu ((le cau) or (((ve cac) or (vien cac)))) duc va hanh vi ve triet*.