Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
bao thuc » cao thuoc, am thuc, va thuc
thuc tan » thuoc tan, thuc dan, thuc tin
hieu ve » hieu va, hieu van
tan anh » tuan anh, tran anh, toan anh
vai cua » dai cua, hai cua, lai cua
y nang » ky nang, ly nang, v nang
ve bao » te bao, va bao
vi cua » di cua

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 y nang ((xa hoi) or (ma hoa)). hieu ve bao thuc tan anh ((vi cua) OR (vai cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach y nang ((xa hoi) OR (ma hoa)). hieu ve bao thuc tan anh ((vi cua) OR (vai cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach y nang ((xa hoi) or (ma hoa)). hieu ve bao thuc tan anh ((vi cua) OR (vai cua)) tre".
• Adding a wildcard symbol may retrieve word variants: thuat sach y nang ((xa hoi) or (ma hoa)). hieu ve bao thuc tan anh ((vi cua) OR (vai cua)) tre*.