Perhaps you should try some spelling variations:
tan thanh » tran thanh, tang thanh, toan thanh
vang cua » mang cua, hang cua, tang cua
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, te sach, tu cach
luc tan » luc tai, duc tan, luc tam
van cua » ban cua, dan cua, nan cua
van bao » van ban, van dao
bao luc » bao thuc
su sach » so sach, vu sach
y nang » ky nang, ly nang, v nang
x hoi » xa hoi, o hoi, x ho

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 (su sach)) y nang x hoi. hieu van bao luc tan thanh ((van cua) OR (vang cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) y nang x hoi. hieu van bao luc tan thanh ((van cua) OR (vang cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (su sach)) y nang x hoi. hieu van bao luc tan thanh ((van cua) OR (vang cua)) tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) y nang x hoi. hieu van bao luc tan thanh ((van cua) OR (vang cua)) tre*.