Perhaps you should try some spelling variations:
sach ly » sach y, sach lo, sach ty
va hanh » van hanh, va thanh, va danh
te sach » toc sach
van cau » van hau, van chat, toan cau
ly nang » ky nang, ly hang, ly vang
van dau » van dao, phan dau
luc va » duc va, tuc va, loc va
di cua » dai cua, doi cua, do cua
de cua » le cua, te cua, dieu cua
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: te sach ly nang x hoi. hieu ((van cau) or (van dau)) luc va hanh ((di cua) OR (de cua)) viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ly nang x hoi. hieu ((van cau) OR (van dau)) luc va hanh ((di cua) OR (de cua)) viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ly nang x hoi. hieu ((van cau) or (van dau)) luc va hanh ((di cua) OR (de cua)) viet".
• Adding a wildcard symbol may retrieve word variants: te sach ly nang x hoi. hieu ((van cau) or (van dau)) luc va hanh ((di cua) OR (de cua)) viet*.