Perhaps you should try some spelling variations:
thanh va » thanh van, hanh va, thanh ha
tu sach » thu sach, su sach, te sach
ty nang » ky nang, ty xang, ly nang
ty hang » ly hang, ty xang, thi hang
hieu ve » hieu va, hieu van
luc va » duc va, tuc va, loc va
va cua » va chua, via cua, ca cua
ve cam » ve cham, ve cac, va cam
xuc va » duc va, tuc va, xac va
cua te » cua tu

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) or (ty hang)) xa hoi. hieu ve cam ((xuc va) OR (luc va)) thanh va cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ty nang) OR (ty hang)) xa hoi. hieu ve cam ((xuc va) OR (luc va)) thanh va cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ty nang) or (ty hang)) xa hoi. hieu ve cam ((xuc va) OR (luc va)) thanh va cua te".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ty nang) or (ty hang)) xa hoi. hieu ve cam ((xuc va) OR (luc va)) thanh va cua te*.