Perhaps you should try some spelling variations:
thanh xuc » thanh xuan, thanh huy, hanh xu
cau tren » cu tren, dau tren, cau treo
hieu van » thien van, lieu va, hieu ve
danh vai » danh sai, danh va, doanh van
va danh » va dinh, va dan, va hanh
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
hieu va » lieu va, hieu qua
ty nang » ky nang, ty xang, ty hang
ca tren » cu tren, la tren, co tren
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 ty nang x hoi. ((hieu van) or (hieu va)) thanh xuc va danh vai ((cau tren) OR (ca tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang x hoi. ((hieu van) OR (hieu va)) thanh xuc va danh vai ((cau tren) OR (ca tren))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty nang x hoi. ((hieu van) or (hieu va)) thanh xuc va danh vai ((cau tren) OR (ca tren))*".