Perhaps you should try some spelling variations:
tan hanh » tan thanh, tang hanh, toan hanh
su triet » su viet, su tien, ve triet
tu sach » thu sach, su sach, te sach
ve cham » va cham, ve chat, vu cham
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
ve cai » va cai, ve cac, ve tai
x hoi » xa hoi, o hoi, x ho
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 v nang x hoi. hieu ((ve cai) or (ve cham)) duc tan hanh vi su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach v nang x hoi. hieu ((ve cai) OR (ve cham)) duc tan hanh vi su triet*.