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

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 van 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 van anh ((vi cua) OR (vai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (hoc sach)) y lang xa hoi. hieu ve dam tu van 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 van anh ((vi cua) OR (vai cua)) tre*.