Perhaps you should try some spelling variations:
sach thu » sach thue, sach thieu, sach tham
te sach » toc sach
nang xa » lang xa, nang ma, mang xa
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
hanh di » hanh vi, hanh de, hang di
cua tre » cua te, cuu tre, cua triet
cac tu » cac thu, cach tu, cac du
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: te sach thu ((nang xa) OR (nang x)) hoi. hieu va cac tu va hanh di cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach thu ((nang xa) OR (nang x)) hoi. hieu va cac tu va hanh di cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach thu ((nang xa) OR (nang x)) hoi. hieu va cac tu va hanh di cua tre*.