Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
sach thue » sach thieu, sach tham, cach thuc
su triet » su viet, su tien, ve triet
sach thu » sach thieu, sach tham, cach thuc
va hanh » van hanh, va thanh, va danh
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve cam » ve cham, ve cac, va cam
vi su » va su, ve su, ki su

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 thu) OR (sach thue)) nang xa hoi. hieu ve cam xuc ((va hanh) or (ban thanh)) vi su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach thu) OR (sach thue)) nang xa hoi. hieu ve cam xuc ((va hanh) OR (ban thanh)) vi su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach thu) OR (sach thue)) nang xa hoi. hieu ve cam xuc ((va hanh) or (ban thanh)) vi su triet".
• Adding a wildcard symbol may retrieve word variants: su ((sach thu) OR (sach thue)) nang xa hoi. hieu ve cam xuc ((va hanh) or (ban thanh)) vi su triet*.