Perhaps you should try some spelling variations:
thieu nien » thien nhien
bieu hien » dieu hien, dieu khien, bien phien
te sach » toc sach
sach ky » sac ky, sach y, sach ty
va hanh » van hanh, va thanh, va danh
bai va » mai va, ban va, dai va
vi cua » vai cua
di cua » dai cua, doi cua, de cua
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. ((thieu nien) or (bieu hien)) cac bai va hanh ((vi cua) OR (di cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang x hoi. ((thieu nien) OR (bieu hien)) cac bai va hanh ((vi cua) OR (di cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang x hoi. ((thieu nien) or (bieu hien)) cac bai va hanh ((vi cua) OR (di cua)) tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang x hoi. ((thieu nien) or (bieu hien)) cac bai va hanh ((vi cua) OR (di cua)) tre*.