Perhaps you should try some spelling variations:
tay lang » tai lang, tay tang, tay quang
dinh vai » dinh vi, dinh va, dinh tai
vu sach » vu bach, su sach, vu khach
ky dang » ky nang, ky danh
hieu ve » hieu va, hieu van
cac tuc » cac toc, cac tu, cac tac
cuu tre » cua tre, cau tren, cau treo
ve cac » va cac, vien cac
tuc va » thuc va, truc va, tuc xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ((tay lang) or (ky dang)) xa hoi. hieu ve cac tuc va ((dinh vai) OR (dinh van)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ((tay lang) OR (ky dang)) xa hoi. hieu ve cac tuc va ((dinh vai) OR (dinh van)) cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ((tay lang) or (ky dang)) xa hoi. hieu ve cac tuc va ((dinh vai) OR (dinh van)) cuu tre*".