Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
tu sach » su sach, te sach, tu cach
nang xa » nang x, lang xa, nang ma
va cham » va chat, va tham
hanh va » hang va, hanh vi
ca tren » cau tren, cu tren, la tren
y nang » ky nang, ly nang, v nang
luc va » duc va, tuc va
loc va » hoc va
va ca » va cac, va cao, va cai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sach) OR (tu sach)) y nang xa hoi. lieu va cham ((luc va) or (loc va)) hanh va ca tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (tu sach)) y nang xa hoi. lieu va cham ((luc va) OR (loc va)) hanh va ca tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) OR (tu sach)) y nang xa hoi. lieu va cham ((luc va) or (loc va)) hanh va ca tren".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) OR (tu sach)) y nang xa hoi. lieu va cham ((luc va) or (loc va)) hanh va ca tren*.