Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
vu sach » vu bach, su sach, vu khach
nang xa » nang x, lang xa, nang ma
qua nam » quan nam, cua nam, quang nam
xuc van » duc van, luc van, xuc ban
vuc van » duc van, luc van, thuc van
van tai » von tai, van tuan
y nang » ky nang, ly nang, v nang
cuc te » cua te, cuc thue, cuc tieu

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 (vu sach)) y nang xa hoi. hieu qua nam ((xuc van) OR (vuc van)) van tai cuc te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (vu sach)) y nang xa hoi. hieu qua nam ((xuc van) OR (vuc van)) van tai cuc te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) or (vu sach)) y nang xa hoi. hieu qua nam ((xuc van) OR (vuc van)) van tai cuc te".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (vu sach)) y nang xa hoi. hieu qua nam ((xuc van) OR (vuc van)) van tai cuc te*.