Perhaps you should try some spelling variations:
thuoc sach » nuoc sach, thuat sach, thuoc sinh
hoc sach » hoc sinh, hoc cac, hoc anh
cua viet » ca viet, cua vat, cua dieu
van tuan » van quan, van ban, anh tuan
tuan vi » quan vi, luan vi, quans vi
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cao xuc » cam xuc, cao duc, cao suc
xuc van » duc van, luc van, vuc van
va cao » va cac, va co, va dao
y nang » ky nang, ly nang, v nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thuoc sach) OR (hoc sach)) y nang xa hoi. hieu va cao xuc van tuan vi ((cua viet) or (hoa viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuoc sach) OR (hoc sach)) y nang xa hoi. hieu va cao xuc van tuan vi ((cua viet) OR (hoa viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuoc sach) OR (hoc sach)) y nang xa hoi. hieu va cao xuc van tuan vi ((cua viet) or (hoa viet))".
• Adding a wildcard symbol may retrieve word variants: ((thuoc sach) OR (hoc sach)) y nang xa hoi. hieu va cao xuc van tuan vi ((cua viet) or (hoa viet))*.