Perhaps you should try some spelling variations:
trong van » trong cac
cac chuc » cac chu, cac chung, cach thuc
van hanh » van thanh, ban hanh, van anh
tu sach » thu sach, su sach, te sach
y trong » ly trong, ky trong, _ trong
van hoi » van hoa, van hoc, van hoe
qua cac » cua cac
va hanh » va thanh, va danh, ban hanh
cua tuc » cua duc, cua tu, cua thuoc
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 y trong van hoi. hieu qua cac chuc ((va hanh) OR (van hanh)) vi ((cua te) or (cua tuc))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y trong van hoi. hieu qua cac chuc ((va hanh) OR (van hanh)) vi ((cua te) OR (cua tuc)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y trong van hoi. hieu qua cac chuc ((va hanh) OR (van hanh)) vi ((cua te) or (cua tuc))".
• Adding a wildcard symbol may retrieve word variants: tu sach y trong van hoi. hieu qua cac chuc ((va hanh) OR (van hanh)) vi ((cua te) or (cua tuc))*.