Perhaps you should try some spelling variations:
trinh vat » trinh van, trinh luat, sinh vat
va trinh » van trinh, va tinh, lap trinh
sach ty » sach y, sach tu, sach thu
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
dao duc » giao duc, tao duoc
vat cua » mat cua, bat cua, dat cua
sac ky » cac ky, sai ky
ve dao » de dao, va dao, ve bao
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((sach ty) or (sac ky)) nang xa hoi. hieu ve dao duc va trinh vat cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach ty) OR (sac ky)) nang xa hoi. hieu ve dao duc va trinh vat cua te.
• Adding a wildcard symbol may retrieve word variants: thu ((sach ty) or (sac ky)) nang xa hoi. hieu ve dao duc va trinh vat cua te*.