Perhaps you should try some spelling variations:
danh vai » danh sai, danh va, doanh van
thu sac » thu sach, thu san, thu xac
hieu va » lieu va
va danh » va dinh, va dan, va hanh
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
sac ky » cac ky, sai ky
cac lo » cac lop, cac co, cac bo
x hoi » xa hoi, o hoi, x ho
lo va » lo van, lao va, ly va

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sac ky nang x hoi. ((hieu va) OR (hieu qua)) cac lo va danh vai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sac ky nang x hoi. ((hieu va) OR (hieu qua)) cac lo va danh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: thu sac ky nang x hoi. ((hieu va) OR (hieu qua)) cac lo va danh vai cua tre*.