Perhaps you should try some spelling variations:
thanh van » thanh san, thanh toan, thanh phan
chat xuc » cam xuc, chao xu, chat cua
nang xay » dang xay, nganh xay, nang xuan
va thanh » gia thanh, ban thanh, va tinh
chat huu » pham huu
tu sach » thu sach, su sach, te sach
van luu » von luu, van lu, van luc
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
hieu ve » hieu van
xay hoi » xa hoi, tay hoi, cay phoi
luu tre » luu tru, cuu tre, luy tre

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