Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
thue nang » thien nang, thuat nang, thi nang
sach thue » sach thu, sach thieu, sach tham
su triet » su viet, su tien, ve triet
hieu van » hieu va, thien van, lieu va
hang doi » hang di, hang loi, huong doi
su sach » so sach, vu sach
van lam » van nam
nang xa » nang x, lang xa, nang ma
tuc va » thuc va, truc va, duc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach thue nang xa hoi. hieu van lam ((tuc va) OR (tuc xa)) hang doi ((cua triet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach thue nang xa hoi. hieu van lam ((tuc va) OR (tuc xa)) hang doi ((cua triet) OR (su triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach thue nang xa hoi. hieu van lam ((tuc va) OR (tuc xa)) hang doi ((cua triet) or (su triet))*".