Perhaps you should try some spelling variations:
cau treo » cau theo, cau tren, cau triet
hang tai » hang va, dung tai
hanh tai » thanh tai, han tai, hinh tai
sach ty » sach y, sach tu, sach thu
te sach » toc sach
hieu ve » hieu va, hieu van
ty nang » ky nang, ty xang, ty hang
ve cac » va cac, vien cac
xuc va » tuc va, luc va, xac 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: te sach ty nang x hoi. hieu ve cac ((xuc va) or (duc va)) ((hanh tai) OR (hang tai)) cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang x hoi. hieu ve cac ((xuc va) OR (duc va)) ((hanh tai) OR (hang tai)) cau treo.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty nang x hoi. hieu ve cac ((xuc va) or (duc va)) ((hanh tai) OR (hang tai)) cau treo".
• Adding a wildcard symbol may retrieve word variants: te sach ty nang x hoi. hieu ve cac ((xuc va) or (duc va)) ((hanh tai) OR (hang tai)) cau treo*.