Perhaps you should try some spelling variations:
xanh hanh » danh thanh, ban hanh, van hanh
thu sach » tu sach, thuat sach, thuoc sach
suc xanh » suc manh, suc canh, tuoc xanh
dua tren » dung tren
hanh tai » thanh tai, hang tai, han tai
hieu van » hieu va, thien van, lieu va
cao suc » cao su, cao duc
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va
nang xa » nang x, lang xa, nang ma
cua te » cua tu

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 ky nang xa hoi. ((hieu ve) OR (hieu van)) cao suc xanh hanh tai ((dua tren) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang xa hoi. ((hieu ve) OR (hieu van)) cao suc xanh hanh tai ((dua tren) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky nang xa hoi. ((hieu ve) OR (hieu van)) cao suc xanh hanh tai ((dua tren) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang xa hoi. ((hieu ve) OR (hieu van)) cao suc xanh hanh tai ((dua tren) or (cua te))*.