Perhaps you should try some spelling variations:
van danh » van doanh, van anh, van manh
van hanh » van thanh, ban hanh, van anh
vu sach » su sach, vu khach
ly hang » ly quang
hang xa » hoang xa, hang va, hang ca
hieu va » lieu va, hieu qua
cam tuc » cam xuc, cam tu, nam thuc
va cam » va cham, va cac, va cao
du cua » duy cua, dau cua, dum cua
cua te » cua tu
bach » cach, bac

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

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