Perhaps you should try some spelling variations:
ve triet » va trien, su triet
su sach » so sach, vu sach
lang xa » lang ha, dang xay, lang van
qua cau » quan cau, qua cac, qua ca
cau loc » hau loc, cau hoc, cau luc
va danh » va dinh, va dan, dia danh
va hanh » van hanh, va thanh, ban hanh
y lang » o lang, _ lang, tay lang
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 y lang xa hoi. hieu qua cau loc ((va danh) or (va hanh)) vi ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y lang xa hoi. hieu qua cau loc ((va danh) OR (va hanh)) vi ve triet*.