Perhaps you should try some spelling variations:
hoc sach » hoc sinh, hoc cac, hoc anh
te sach » toc sach
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
vai cua » dai cua, hai cua, lai cua
y lang » o lang, _ lang, tay lang
ve dam » ven dam, ke dam, va dam
dam tu » nam tu, cam tu, tam tu
va anh » van anh, va danh, va hanh
vi cua » di cua

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) or (hoc sach)) y lang xa hoi. hieu ve dam tu va anh ((vi cua) or (vai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (hoc sach)) y lang xa hoi. hieu ve dam tu va anh ((vi cua) OR (vai cua)) tre.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (hoc sach)) y lang xa hoi. hieu ve dam tu va anh ((vi cua) or (vai cua)) tre*.