Perhaps you should try some spelling variations:
thu nang » thi nang, thu hang, thu bang
van hanh » van thanh, ban hanh, van anh
hanh vai » hanh vi, hanh va, hanh tai
su sach » vu sach
so sach » so sanh, bo sach, co sach
nang xa » nang x, lang xa, nang ma
dau tuc » dau tu, dao tuc, cau truc
tuc van » thuc van, truc van, tuc va
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
va dau » va dao

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) or (so sach)) thu nang xa hoi. lieu va dau tuc van hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) thu nang xa hoi. lieu va dau tuc van hanh vai cua tre.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sach)) thu nang xa hoi. lieu va dau tuc van hanh vai cua tre*.