Perhaps you should try some spelling variations:
manh nhan » danh nhan, anh nhan, minh nhan
toc sach » hoc sach, doc sach, thuoc sach
nhan tai » hang tai, van tai, toan tai
sach ky » sac ky, sach y, sach ty
chu duc » thu duc, chua duoc, cuu duoc
cau duc » cao duc, cau luc, cau truc
thi van » thi lan, thi hanh, thi nang
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
cuc tu » cuc du, luc tu, duc tu

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