Perhaps you should try some spelling variations:
hoang van » hang va
sach thu » sach thue, sach thieu, sach tham
tang van » dang van, trong van, tang luan
qua tham » qua cham, qua than, qua thanh
tham xuc » tham nuoc, tham thuc, pham duc
so sach » so sanh, bo sach, co sach
va hanh » van hanh, va thanh, va danh
xuc va » duc va, tuc va, luc va
vi cua » vai cua
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach thu ((tang van) or (hoang van)) hoc. hieu qua tham xuc va hanh ((vi cua) or (di cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach thu ((tang van) OR (hoang van)) hoc. hieu qua tham xuc va hanh ((vi cua) OR (di cua)) te.
• Adding a wildcard symbol may retrieve word variants: so sach thu ((tang van) or (hoang van)) hoc. hieu qua tham xuc va hanh ((vi cua) or (di cua)) te*.