Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
dang xay » dang van, van xay
tu sach » thu sach, su sach, te sach
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
cam duc » cam xuc, cao duc, nam duoc
sach lo » sach dao, sach doi, sach hoi
hieu va » lieu va, hieu qua
lang xa » lang ha, lang van
cua te » cua tu

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 lo ((lang xa) or (dang xay)) hoi. hieu va ((cam duc) OR (pham duc)) va hanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach lo ((lang xa) OR (dang xay)) hoi. hieu va ((cam duc) OR (pham duc)) va hanh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach lo ((lang xa) or (dang xay)) hoi. hieu va ((cam duc) OR (pham duc)) va hanh vai cua te".
• Adding a wildcard symbol may retrieve word variants: tu sach lo ((lang xa) or (dang xay)) hoi. hieu va ((cam duc) OR (pham duc)) va hanh vai cua te*.