Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
va thanh » gia thanh, ban thanh, va tinh
ty nang » ty xang, ty hang, ly nang
hieu va » lieu va, hieu qua
lai cua » dai cua, lai chau, thai cua
hai cua » thai cua, dai cua, hoi cua
cac ly » cac ky, cac le, cam ly

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach ((ty nang) OR (ky nang)) xa hoi. hieu va cac ly va thanh ((lai cua) or (hai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ((ty nang) OR (ky nang)) xa hoi. hieu va cac ly va thanh ((lai cua) OR (hai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ((ty nang) OR (ky nang)) xa hoi. hieu va cac ly va thanh ((lai cua) or (hai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: thuat sach ((ty nang) OR (ky nang)) xa hoi. hieu va cac ly va thanh ((lai cua) or (hai cua)) tre*.