Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, te sach
hang di » hang doi, hang vi, hang dien
hanh di » hanh vi, hanh de, danh di
van lam » van nam
lam tuc » lam thuoc, lam truoc, luat tuc
nang xa » nang x, lang xa, nang ma
vu sach » vu bach, su sach, vu khach
cua tre » cua te, cuu tre, cua triet
tuc va » thuc va, truc va, tuc xa

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) or (vu sach)) ky nang xa hoi. hieu van lam tuc va ((hanh di) OR (hang di)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (vu sach)) ky nang xa hoi. hieu van lam tuc va ((hanh di) OR (hang di)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (vu sach)) ky nang xa hoi. hieu van lam tuc va ((hanh di) OR (hang di)) cua tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (vu sach)) ky nang xa hoi. hieu van lam tuc va ((hanh di) OR (hang di)) cua tre*.