Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
thanh ca » thanh cha, thanh cac, thanh ha
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
van cau » van dau, van hau, van chat
truc va » thuc va, thuc vat, trung va
y nang » ky nang, ly nang, v nang
tuc va » thuc va, tuc xa, duc va
ca cua » co cua
cua te » cua tu

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 y nang xa hoi. hieu van cau ((tuc va) or (truc va)) thanh ca cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang xa hoi. hieu van cau ((tuc va) OR (truc va)) thanh ca cua te.
• Adding a wildcard symbol may retrieve word variants: su sach y nang xa hoi. hieu van cau ((tuc va) or (truc va)) thanh ca cua te*.