Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
manh hanh » xanh hanh, danh thanh, minh thanh
hieu vien » hieu hien, hieu viec, thieu nien
sach thu » sach thue, sach thieu, sach tham
vien cao » vien cac, vien dai, vien da
sach ty » sach y, sach tu, xach tay
cao suc » cao su, cao duc
hanh va » hang va, hanh vi
cua tre » cua te, cuu tre, dua tren
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sach ty) or (sach thu)) nang x hoi. hieu vien cao suc manh hanh va ((cua tre) OR (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ty) OR (sach thu)) nang x hoi. hieu vien cao suc manh hanh va ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ty) or (sach thu)) nang x hoi. hieu vien cao suc manh hanh va ((cua tre) OR (cua triet))".
• Adding a wildcard symbol may retrieve word variants: te ((sach ty) or (sach thu)) nang x hoi. hieu vien cao suc manh hanh va ((cua tre) OR (cua triet))*.