Perhaps you should try some spelling variations:
te sach » toc sach
sach ky » sac ky, sach y, sach ty
va hanh » van hanh, va thanh, ban hanh
va danh » va dinh, va dan, dia danh
va cham » va chat, va tham
nang xa » nang x, lang xa, nang ma
su tien » su kien, su hien, tu tieng
ve cam » ve cham, ve cac, va cam
du su » dau su, da su, de su

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 xa hoi. hieu ((ve cam) or (va cham)) xuc ((va danh) OR (va hanh)) du su tien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang xa hoi. hieu ((ve cam) OR (va cham)) xuc ((va danh) OR (va hanh)) du su tien.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang xa hoi. hieu ((ve cam) or (va cham)) xuc ((va danh) OR (va hanh)) du su tien".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang xa hoi. hieu ((ve cam) or (va cham)) xuc ((va danh) OR (va hanh)) du su tien*.