Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
va hanh » van hanh, va thanh, ban hanh
va danh » va dinh, va dan, dia danh
cau loc » hau loc, cau hoc, cau luc
cua tuc » cua duc, cua tu, cua thuoc
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
te sach » toc sach
ve cau » ke cau, va cau, ve cac

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

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