Perhaps you should try some spelling variations:
tinh vai » tinh va, tinh hai, tinh bai
dau tren » dat tren, dau tieng, dau trong
dau tien » van tien
te sach » toc sach
sach ky » sac ky, sach y, sach ty
van cau » van dau, van hau, van chat
va tinh » may tinh
x hoi » xa hoi, o hoi, x ho

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 x hoi. hieu ((van nam) or (van cau)) tu va tinh vai ((dau tren) OR (dau tien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang x hoi. hieu ((van nam) OR (van cau)) tu va tinh vai ((dau tren) OR (dau tien)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang x hoi. hieu ((van nam) or (van cau)) tu va tinh vai ((dau tren) OR (dau tien))".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang x hoi. hieu ((van nam) or (van cau)) tu va tinh vai ((dau tren) OR (dau tien))*.