Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
va thanh » gia thanh, ban thanh, va tinh
tay lang » tai lang, tay tang, tay quang
cam tuc » cam xuc, cam tu, nam thuc
hieu ve » hieu va, hieu van
y lang » o lang, _ lang, yen lang
tuc va » thuc va, truc va, tuc xa
vi cua » vai cua
di cua » dai cua, doi cua, de cua
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ((y lang) OR (tay lang)) xa hoi. hieu ve cam tuc va thanh ((vi cua) or (di cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ((y lang) OR (tay lang)) xa hoi. hieu ve cam tuc va thanh ((vi cua) OR (di cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ((y lang) OR (tay lang)) xa hoi. hieu ve cam tuc va thanh ((vi cua) or (di cua)) tre".
• Adding a wildcard symbol may retrieve word variants: toc sach ((y lang) OR (tay lang)) xa hoi. hieu ve cam tuc va thanh ((vi cua) or (di cua)) tre*.