Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
ve triet » va trien
su triet » su viet, su tien
thanh vi » hanh vi, thanh va, thanh ve
cham luu » cham cuu, chat lua, phap luu
nang xa » nang x, lang xa, nang ma
hieu vu » hieu va, hieu ve, hieu su
vu cham » va cham, vu kham, tu cham
sach ly » sach lo, sach ty, sach hay
luu van » cuu van, luan van, luu hanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach ly) or (sach y)) nang xa hoi. hieu vu cham luu van thanh vi ((su triet) or (ve triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ly) OR (sach y)) nang xa hoi. hieu vu cham luu van thanh vi ((su triet) OR (ve triet)).
• Adding a wildcard symbol may retrieve word variants: tu ((sach ly) or (sach y)) nang xa hoi. hieu vu cham luu van thanh vi ((su triet) or (ve triet))*.