Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
hieu van » hieu va, thien van, hieu ve
tu sach » su sach, te sach, tu cach
nang xa » nang x, lang xa, nang ma
cau xuc » cam xuc, cau luc, cau truc
han tai » hang tai, nhan tai, van tai
tai cua » thai cua, tai cuc, tri cua
xuc va » duc va, tuc va, luc va
va han » va phan, van han, va hanh
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) or (thu sach)) ky nang xa hoi. ((hieu van) OR (lieu va)) cau xuc va han tai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ky nang xa hoi. ((hieu van) OR (lieu va)) cau xuc va han tai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thu sach)) ky nang xa hoi. ((hieu van) OR (lieu va)) cau xuc va han tai cua te".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) ky nang xa hoi. ((hieu van) OR (lieu va)) cau xuc va han tai cua te*.