Perhaps you should try some spelling variations:
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
cau treo » cau theo, cau tren, cau triet
tu sach » thu sach, su sach, te sach
ky lang » ky nang, ky tang, tay lang
ky dang » ky nang, ky danh
hieu va » lieu va, hieu qua
cac xuc » cam xuc, chat xuc, cac cuoc
dau thi » cau thi, dan thi, dao thi
thi cau » thi chau, thi cu, thi cam
va dau » va dao

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 ((ky lang) OR (ky dang)) xa hoi. hieu va ((cac xuc) or (cac nuoc)) va dau thi cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ky lang) OR (ky dang)) xa hoi. hieu va ((cac xuc) OR (cac nuoc)) va dau thi cau treo.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ky lang) OR (ky dang)) xa hoi. hieu va ((cac xuc) or (cac nuoc)) va dau thi cau treo".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ky lang) OR (ky dang)) xa hoi. hieu va ((cac xuc) or (cac nuoc)) va dau thi cau treo*.