Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
hien bach » vien bach, hien hanh, dien sach
so sach » so sanh, bo sach, co sach
dinh vi » dinh ve, dinh viet, dinh tri
danh vi » hanh vi, danh di, danh va
sach ty » sach y, sach tu, sach thu
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ty nang xa hoi. hieu ((hien bach) or (thien hach)) nuoc va ((danh vi) OR (dinh vi)) cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty nang xa hoi. hieu ((hien bach) OR (thien hach)) nuoc va ((danh vi) OR (dinh vi)) cua tu*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ty nang xa hoi. hieu ((hien bach) or (thien hach)) nuoc va ((danh vi) OR (dinh vi)) cua tu*".