Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, tu cach
va danh » va dinh, va hanh, dia danh
te sach » toc sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cau luc » cau truc, cau phuc
va dan » ca dan, va dao, va dau
ve cau » ke cau, va cau, ve cac
cua te » cua tu

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) or (te sach)) ky nang xa hoi. hieu ve cau luc ((va danh) OR (va dan)) dai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ky nang xa hoi. hieu ve cau luc ((va danh) OR (va dan)) dai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (te sach)) ky nang xa hoi. hieu ve cau luc ((va danh) OR (va dan)) dai cua te".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) ky nang xa hoi. hieu ve cau luc ((va danh) OR (va dan)) dai cua te*.