Perhaps you should try some spelling variations:
tham xuc » tham nuoc, tham thuc, pham duc
hieu van » hieu va, thien van, lieu va
van tham » van thanh, van tuan, van chat
thu sach » thuat sach, thuoc sach, thu hoach
ty nang » ky nang, ty xang, ty hang
va hanh » van hanh, va thanh, va danh
vai cau » va cau, van cau, lai chau
vai cac » va cac, tai cac, voi cac
tu sach » su sach, te sach, tu cach
xuc va » duc va, tuc va, luc va
x hoi » xa hoi, o hoi, x ho

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) OR (thu sach)) ty nang x hoi. hieu van tham xuc va hanh ((vai cau) or (vai cac)) tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ty nang x hoi. hieu van tham xuc va hanh ((vai cau) OR (vai cac)) tren*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (thu sach)) ty nang x hoi. hieu van tham xuc va hanh ((vai cau) or (vai cac)) tren*".