Perhaps you should try some spelling variations:
ban hanh » ban hang
va thanh » gia thanh, ban thanh, va tinh
cau tren » cu tren, dau tren, cau treo
hieu van » hieu va, thien van, lieu va
van cham » van chat, van tham, va cham
cham xuc » cam xuc, chat xuc, cham soc
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
ca tren » cu tren, la tren, co tren
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 cham xuc ((ban hanh) or (va thanh)) 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 cham xuc ((ban hanh) OR (va thanh)) 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 cham xuc ((ban hanh) or (va thanh)) vai ((cau tren) OR (ca tren))".
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang x hoi. hieu van cham xuc ((ban hanh) or (va thanh)) vai ((cau tren) OR (ca tren))*.