Perhaps you should try some spelling variations:
thanh xuc » thanh xuan, thanh huy, hanh xu
thu sach » tu sach, thuat sach, thuoc sach
hanh vai » hanh vi, hanh va, hanh tai
hieu van » thien van, lieu va, hieu ve
cau tren » cu tren, dau tren, ca tren
tu nong » tu dong, tu cong, tu tong
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
tu nang » tru nang, tu nano, tu lang
vai cau » va cau, van cau, vai cac
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: thu sach ((tu nang) OR (tu nong)) x hoi. ((hieu van) or (hieu va)) thanh xuc va hanh vai cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ((tu nang) OR (tu nong)) x hoi. ((hieu van) OR (hieu va)) thanh xuc va hanh vai cau tren*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ((tu nang) OR (tu nong)) x hoi. ((hieu van) or (hieu va)) thanh xuc va hanh vai cau tren*".