Perhaps you should try some spelling variations:
bieu hien » dieu hien, dieu khien, bien phien
hien cac » thien cac, vien cac, hieu cac
tu sach » thu sach, su sach, tu cach
te sach » toc sach
nang xa » nang x, lang xa, nang ma
cac lao » ca lao, cac loai, cac giao
va dinh » van dinh, va kinh, va tinh
dinh va » dinh van, dinh ve, tinh va
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
lao va » tao va, cao va, bao va
va cua » va chua, via cua, ca cua

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)) y nang xa hoi. bieu hien cac lao va dinh va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) y nang xa hoi. bieu hien cac lao va dinh va cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) y nang xa hoi. bieu hien cac lao va dinh va cua tre*.