Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
va hanh » van hanh, va thanh, va danh
cao xuc » cam xuc, cao duc, cao suc
hieu va » lieu va, hieu qua
lang xa » lang ha, dang xay, lang van
xuc va » duc va, tuc va, luc va
ve cua » de cua, te cua, ve cum
le cua » ly cua
va cao » va cac, va co, va dao

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

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