Perhaps you should try some spelling variations:
nham thu » nham thuc, nam thu, pham thu
cham tuc » nham thuc, pham thuc, tham thuc
va tinh » may tinh
mai duc » mai dich, mai quoc, mai dung
hai duc » hoai duc, ha duc, hai cuc
te sach » toc sach
hieu ve » hieu va, hieu van
y nang » ky nang, ly nang, v nang
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y nang x hoi. hieu ve ((cham tuc) or (nham thu)) va tinh ((hai duc) OR (mai duc)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang x hoi. hieu ve ((cham tuc) OR (nham thu)) va tinh ((hai duc) OR (mai duc)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang x hoi. hieu ve ((cham tuc) or (nham thu)) va tinh ((hai duc) OR (mai duc)) tre".
• Adding a wildcard symbol may retrieve word variants: te sach y nang x hoi. hieu ve ((cham tuc) or (nham thu)) va tinh ((hai duc) OR (mai duc)) tre*.