Perhaps you should try some spelling variations:
truc van » truc va, truc ban, truc dan
thuc van » thuc vat, thuc dan, thuc va
su triet » su viet, su tien, ve triet
su sach » so sach, vu sach
hieu ve » hieu va, hieu van
hang vi » hang va, hanh vi, hang di
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
ve cac » va cac, vien cac
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: su sach v nang x hoi. hieu ve cac ((truc van) or (thuc van)) hang vi su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach v nang x hoi. hieu ve cac ((truc van) OR (thuc van)) hang vi su triet*.