Perhaps you should try some spelling variations:
hanh de » hanh ve, hanh kem
hanh di » hanh vi, hang di, danh di
sach ty » sach tu, sach thu, xach tay
cuu tre » cua tre, cau tren, cau treo
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
cam tu » cam thu, nam tu, dam tu
va cam » va cham, va cac, va cao

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 ty) or (sach y)) nang xa hoi. hieu va cam tu va ((hanh di) OR (hanh de)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ty) OR (sach y)) nang xa hoi. hieu va cam tu va ((hanh di) OR (hanh de)) cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ty) or (sach y)) nang xa hoi. hieu va cam tu va ((hanh di) OR (hanh de)) cuu tre".
• Adding a wildcard symbol may retrieve word variants: te ((sach ty) or (sach y)) nang xa hoi. hieu va cam tu va ((hanh di) OR (hanh de)) cuu tre*.