Perhaps you should try some spelling variations:
danh giao » doanh giao, danh gia, anh giao
nuoc sach » nguoi sach, hoc sach, cuoc cach
doc sach » hoc sach, toc sach, dac sac
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
van cac » van hac, van cau, dan cac
van bac » van ban, van bao, van hac
va danh » va dinh, va dan, va hanh
giao su » giao duc
su tien » su kien, su hien, tu tieng
xuc va » duc va, tuc va, luc va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc sach) or (nuoc sach)) ty nang xa hoi. hieu ((van cac) OR (van bac)) xuc va danh giao su tien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc sach) OR (nuoc sach)) ty nang xa hoi. hieu ((van cac) OR (van bac)) xuc va danh giao su tien.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc sach) or (nuoc sach)) ty nang xa hoi. hieu ((van cac) OR (van bac)) xuc va danh giao su tien".
• Adding a wildcard symbol may retrieve word variants: ((doc sach) or (nuoc sach)) ty nang xa hoi. hieu ((van cac) OR (van bac)) xuc va danh giao su tien*.