Perhaps you should try some spelling variations:
nhan dien » nhan vien, nhan dieu, nhan dan
cau treo » cau theo, cau tren, cau triet
anh nhan » danh nhan, doanh nhan, thanh nhan
hieu van » hieu va, thien van, lieu va
lang ha » long ha
sach ty » sach y, sach tu, sach thu
van cau » van dau, van hau, van chat
cau duc » cao duc, cau luc, chu duc
nang xa » nang x, lang xa, nang ma
cuu tre » cua tre, cau tren
tu sach » thu sach, su sach, te sach

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 ((nang xa) or (lang ha)) hoi. hieu van cau duc anh nhan dien ((cuu tre) or (cau treo))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty ((nang xa) OR (lang ha)) hoi. hieu van cau duc anh nhan dien ((cuu tre) OR (cau treo)).
• Adding a wildcard symbol may retrieve word variants: tu sach ty ((nang xa) or (lang ha)) hoi. hieu van cau duc anh nhan dien ((cuu tre) or (cau treo))*.