Perhaps you should try some spelling variations:
thien van » thi van
manh nhan » danh nhan, anh nhan, minh nhan
toc sach » hoc sach, doc sach, thuoc sach
nhan tai » hang tai, van tai, toan tai
cau luc » cau truc, cau phuc
cua tuc » cua duc, cua thuoc, luat tuc
sach ky » sac ky, sach y, sach ty
cau duc » cao duc, chu duc, cau truc
nang xa » nang x, lang xa, nang ma
cua tu » cua su, cua cu, cua te

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