Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
van cham » van tham, va cham, van pham
hanh tai » thanh tai, hang tai, han tai
hanh vai » hanh vi, hanh va, hanh van
van chat » cao chat
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
tu sach » thu sach, su sach, te sach
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 cham) OR (van chat)) xuc va ((hanh vai) or (hanh tai)) cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang x hoi. hieu ((van cham) OR (van chat)) xuc va ((hanh vai) OR (hanh tai)) cau tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty nang x hoi. hieu ((van cham) OR (van chat)) xuc va ((hanh vai) or (hanh tai)) cau tren".
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang x hoi. hieu ((van cham) OR (van chat)) xuc va ((hanh vai) or (hanh tai)) cau tren*.