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