Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
thuc van » thuc vat, thuc dan, thuc va
truc van » truc va, truc ban, truc dan
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
hang vi » hanh vi, hang di, khang voi
su sach » so sach, vu sach
ve cac » va cac, vien cac
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang

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 xa hoi. hieu ve cac ((truc van) or (thuc van)) ((hang vi) OR (hang va)) cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach v nang xa hoi. hieu ve cac ((truc van) OR (thuc van)) ((hang vi) OR (hang va)) cua viet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach v nang xa hoi. hieu ve cac ((truc van) or (thuc van)) ((hang vi) OR (hang va)) cua viet*".