Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
toc sach » hoc sach, doc sach, thuoc sach
hang tai » hang va, dung tai
sach ky » sac ky, sach y, sach ty
van cam » van lam, van cau, van dam
xuc va » duc va, tuc va, luc va
cua tu » cua tuc, cua su, cua cu
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: toc sach ky nang x hoi. hieu ((van cam) OR (van nam)) xuc va ((thanh hai) or (hang tai)) cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky nang x hoi. hieu ((van cam) OR (van nam)) xuc va ((thanh hai) OR (hang tai)) cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ky nang x hoi. hieu ((van cam) OR (van nam)) xuc va ((thanh hai) or (hang tai)) cua tu".
• Adding a wildcard symbol may retrieve word variants: toc sach ky nang x hoi. hieu ((van cam) OR (van nam)) xuc va ((thanh hai) or (hang tai)) cua tu*.