Perhaps you should try some spelling variations:
tan hanh » tan thanh, tang hanh, toan hanh
tu sach » thu sach, su sach, te sach
sach ly » sach y, sach lo, sach ty
ly nang » ky nang, ly hang, ly vang
nang xa » nang x, lang xa, nang ma
cam duc » cam xuc, cao duc, pham duc
vai cua » lai cua, bai cua, mai cua
hai cua » thai cua, hoi cua, lai cua
va cam » va cham, va cac, va cao

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ly nang xa hoi. lieu va cam duc tan hanh ((((vai cua) OR (dai cua))) OR (hai cua)) tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ly nang xa hoi. lieu va cam duc tan hanh ((((vai cua) OR (dai cua))) or (hai cua)) tre~".
• Adding a wildcard symbol may retrieve word variants: tu sach ly nang xa hoi. lieu va cam duc tan hanh ((((vai cua) OR (dai cua))) or (hai cua)) tre*.