Perhaps you should try some spelling variations:
hieu vien » hieu hien, hieu viec, thieu nien
vien cac » vien bach, vien dai, vien da
thanh vi » thanh va, thanh ve, nhanh vi
duc danh » duc anh, duc manh, duc hanh
tu manh » tu minh, tu hanh, vu manh
nang xa » nang x, lang xa, nang ma
cac duc » cac du, cao duc, cac dac
tu anh » tu hanh, thu anh, tu lanh
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: ((tu anh) or (tu manh)) chuc nang xa hoi. hieu vien cac duc danh ((thanh vi) or (hanh vi)) cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu anh) OR (tu manh)) chuc nang xa hoi. hieu vien cac duc danh ((thanh vi) OR (hanh vi)) cua tu.
• Adding a wildcard symbol may retrieve word variants: ((tu anh) or (tu manh)) chuc nang xa hoi. hieu vien cac duc danh ((thanh vi) or (hanh vi)) cua tu*.