Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
thien van » thi van
cau tren » cu tren, dau tren, ca tren
thu sach » tu sach, thuat sach, thuoc sach
vai cau » va cau, van cau, vai cac
so sach » so sanh, bo sach, co sach
nang xa » nang x, lang xa, nang ma
van cam » van nam, van lam, van cau
tuc va » thuc va, truc va, duc va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((so sach) or (thu sach)) ky nang xa hoi. thien van cam ((tuc va) OR (tuc xa)) thanh vai cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (thu sach)) ky nang xa hoi. thien van cam ((tuc va) OR (tuc xa)) thanh vai cau tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) or (thu sach)) ky nang xa hoi. thien van cam ((tuc va) OR (tuc xa)) thanh vai cau tren".
• Adding a wildcard symbol may retrieve word variants: ((so sach) or (thu sach)) ky nang xa hoi. thien van cam ((tuc va) OR (tuc xa)) thanh vai cau tren*.