Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
cau tren » cu tren, dau tren, ca tren
sach ty » sach y, sach tu, sach thu
va danh » va dinh, va dan, dia danh
su sach » so sach, vu sach
va hanh » van hanh, va thanh, ban hanh
hieu ve » hieu va, hieu van
xang xa » lang xa, mang xa, ang xa
cac ly » cac ky, cac le, cam ly
ve cac » va cac, vien cac

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 xang xa hoi. hieu ve cac ly ((va hanh) or (va danh)) vai ((cau tren) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty xang xa hoi. hieu ve cac ly ((va hanh) OR (va danh)) vai ((cau tren) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: su sach ty xang xa hoi. hieu ve cac ly ((va hanh) or (va danh)) vai ((cau tren) or (su triet))*.