Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
qua cham » qua hai, qua cac, va cham
hang tai » hang va, dung tai
su triet » su viet, su tien, ve triet
nang xa » nang x, lang xa, nang ma
thuc va » thuc vat, thuc dan, thuc day
y nang » ky nang, ly nang, v nang
thu va » thue va, tu va, thu ha
tai su » tai so, tai tu, lai su

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 y nang xa hoi. hieu qua cham ((thu va) OR (thuc va)) hang tai su triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach y nang xa hoi. hieu qua cham ((thu va) OR (thuc va)) hang tai su triet".
• Adding a wildcard symbol may retrieve word variants: thu sach y nang xa hoi. hieu qua cham ((thu va) OR (thuc va)) hang tai su triet*.