Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
hieu van » hieu va, thien van, lieu va
danh cau » danh dau, danh ca, danh hau
chat xuc » chat huu, cam xuc, chao xu
chat duc » chat doc, chet duoc, pham duc
nang xa » nang x, lang xa, nang ma
te sach » toc sach
va danh » va dinh, va dan, va hanh
cau cua » cau qua, ca cua, cu cua
tu sach » thu sach, su sach, tu cach

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) or (te sach)) ky nang xa hoi. hieu van ((chat duc) OR (chat xuc)) va danh cau cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ky nang xa hoi. hieu van ((chat duc) OR (chat xuc)) va danh cau cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (te sach)) ky nang xa hoi. hieu van ((chat duc) OR (chat xuc)) va danh cau cua viet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) ky nang xa hoi. hieu van ((chat duc) OR (chat xuc)) va danh cau cua viet*.