Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
sach cay » sach cap, sach hay, sach nay
cay cong » cac cong, cao cong, cau cong
van hanh » ban hanh, van anh, van ban
dat tren » dat trong, dua tren
tu sach » thu sach, su sach, te sach
cong xa » cong xay, cong xua, cong ha
hieu va » lieu va, hieu qua
cau xuc » cam xuc, cau luc, cau truc
va cau » van cau, va cac, va dau
vi dat » voi dat, vi dai, va dat

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 cay cong xa hoi. hieu va cau xuc ((van hanh) OR (van thanh)) vi dat tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach cay cong xa hoi. hieu va cau xuc ((van hanh) OR (van thanh)) vi dat tren".
• Adding a wildcard symbol may retrieve word variants: tu sach cay cong xa hoi. hieu va cau xuc ((van hanh) OR (van thanh)) vi dat tren*.