Perhaps you should try some spelling variations:
hien bach » vien bach, thien hach, hien hanh
bieu hien » dieu hien, dieu khien, bien phien
cau tren » cu tren, dau tren, ca tren
toc sach » hoc sach, doc sach, thuoc sach
nang xa » nang x, lang xa, nang ma
tu sach » thu sach, su sach, te sach
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa
va cau » van cau, va cac, va dau

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) or (toc sach)) ky nang xa hoi. bieu hien bach ((xuc va) OR (tuc va)) hang va cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (toc sach)) ky nang xa hoi. bieu hien bach ((xuc va) OR (tuc va)) hang va cau tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (toc sach)) ky nang xa hoi. bieu hien bach ((xuc va) OR (tuc va)) hang va cau tren".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (toc sach)) ky nang xa hoi. bieu hien bach ((xuc va) OR (tuc va)) hang va cau tren*.