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