Perhaps you should try some spelling variations:
manh nhan » danh nhan, anh nhan, hanh nhan
thien van » thi van
minh nhan » minh thanh, minh chanh, minh thang
toc sach » hoc sach, doc sach, thuoc sach
cau duc » cao duc, cau luc, chu duc
sach ky » sac ky, sach y, sach ty
van cau » van dau, van hau, van chat
nang xa » nang x, lang xa, nang ma
cua tu » cua tuc, cua su, cua te
cua cu » cua chu, cua cau, cua su

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ky nang xa hoi. thien van cau duc ((manh nhan) or (minh nhan)) tai ((cua tu) OR (cua cu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky nang xa hoi. thien van cau duc ((manh nhan) OR (minh nhan)) tai ((cua tu) OR (cua cu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ky nang xa hoi. thien van cau duc ((manh nhan) or (minh nhan)) tai ((cua tu) OR (cua cu))".
• Adding a wildcard symbol may retrieve word variants: toc sach ky nang xa hoi. thien van cau duc ((manh nhan) or (minh nhan)) tai ((cua tu) OR (cua cu))*.