Perhaps you should try some spelling variations:
xuan trinh » qua trinh, xuan dinh, xuan kinh
duoc duoc » duoc hoc, hoc duoc, soc duoc
hieu van » hieu va, thien van, lieu va
van duoc » van duc, vat duoc, tan duoc
xa trinh » xa tinh, va trinh, lap trinh
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
van cua » vang cua, ban cua, dan cua
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v 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 y nang xa hoi. hieu van duoc duoc ((xa trinh) or (xuan trinh)) van cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang xa hoi. hieu van duoc duoc ((xa trinh) OR (xuan trinh)) van cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach y nang xa hoi. hieu van duoc duoc ((xa trinh) or (xuan trinh)) van cua tre*.