Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
sach thu » sach thue, sach thieu, sach tham
thuc va » thuc vat, thuc dan, thuc day
vai cua » dai cua, hai cua, lai cua
cao hoi » cau hoi, co hoi, cao hoc
sach ty » sach y, sach tu, xach tay
va lap » va dap
xuc va » duc va, tuc va, luc va
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 ty) or (sach thu)) nang cao hoi. lieu va lap ((xuc va) or (thuc va)) hanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach thu)) nang cao hoi. lieu va lap ((xuc va) OR (thuc va)) hanh vai cua te.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) or (sach thu)) nang cao hoi. lieu va lap ((xuc va) or (thuc va)) hanh vai cua te*.