Perhaps you should try some spelling variations:
manh hanh » xanh hanh, danh thanh, minh thanh
toc sach » hoc sach, doc sach, thuoc sach
hanh tai » thanh tai, hang tai, han tai
dua tren » dung tren
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cao suc » cao su, cao duc
y nang » ky nang, ly nang, v nang
ve cao » va cao, ve bao, ve cac
cua te » cua tu

You may be able to get more results by adjusting your search query.

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