Perhaps you should try some spelling variations:
tham thuc » nham thuc, pham thuc, tam thuc
anh kien » danh kien, hanh kien, anh kiem
tham xuc » tham nuoc, pham duc, cam xuc
tu sach » thu sach, su sach, te sach
hanh ki » hanh vi, hanh ky, hanh kien
su viet » so viet
sach vu » sach va, sach tu, sach uu
dang xa » dang xay, lang xa, dang ha
vu dang » su dang, vu quang, cua dang

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 vu dang xa hoi. lieu va ((tham xuc) OR (tham thuc)) van ((hanh ki) or (anh kien)) su viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach vu dang xa hoi. lieu va ((tham xuc) OR (tham thuc)) van ((hanh ki) OR (anh kien)) su viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach vu dang xa hoi. lieu va ((tham xuc) OR (tham thuc)) van ((hanh ki) or (anh kien)) su viet".
• Adding a wildcard symbol may retrieve word variants: tu sach vu dang xa hoi. lieu va ((tham xuc) OR (tham thuc)) van ((hanh ki) or (anh kien)) su viet*.