Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
ban hang » ngan hang
sach ly » sach y, sach lo, sach ty
tu sach » thu sach, su sach, te sach
ve cham » va cham, vu cham, ve chim
hang xa » hoang xa, hang va, hang ca
ly hang » ly quang
ve chat » va chat, van chat
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: tu sach ly hang xa hoi. hieu ((ve cham) OR (ve chat)) cuu ((ban hanh) or (ban hang)) vi su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ly hang xa hoi. hieu ((ve cham) OR (ve chat)) cuu ((ban hanh) OR (ban hang)) vi su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ly hang xa hoi. hieu ((ve cham) OR (ve chat)) cuu ((ban hanh) or (ban hang)) vi su triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ly hang xa hoi. hieu ((ve cham) OR (ve chat)) cuu ((ban hanh) or (ban hang)) vi su triet*.