Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, lieu va
va danh » va dinh, va dan, va hanh
van cam » van nam, van lam, van cau
sach ky » sach y, sach ty, sach kem
sac ky » cac ky, sai ky
di cua » dai cua, doi cua, de cua
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: tu ((sach ky) OR (sac ky)) nang x hoi. hieu van cam xuc ((ban thanh) or (va danh)) di cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ky) OR (sac ky)) nang x hoi. hieu van cam xuc ((ban thanh) OR (va danh)) di cua tu*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ky) OR (sac ky)) nang x hoi. hieu van cam xuc ((ban thanh) or (va danh)) di cua tu*".