Perhaps you should try some spelling variations:
manh nhan » danh nhan, anh nhan, minh nhan
thien van » thi van
nhan tai » hang tai, van tai, toan tai
sach thu » sach thue, sach thieu, sach tham
cau luc » cau truc, cau phuc
tai cua » thai cua, tai cuc, tri cua
cau duc » cao duc, chu duc, cau truc
sach ty » sach y, sach tu, xach tay
nang xa » nang x, lang xa, nang ma
cua tu » cua tuc, cua su, cua cu

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