Perhaps you should try some spelling variations:
cham tuc » nham thuc, pham thuc, tham thuc
tinh hai » tinh thai, tinh chat, trinh han
nham thu » nham thuc, nam thu, pham thu
hieu van » hieu va, thien van, lieu va
hai duc » hoai duc, mai duc, ha duc
te sach » toc sach
hieu ve » hieu va
duc tre » duoc tren, duc tien
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) OR (hieu van)) ((cham tuc) or (nham thu)) may tinh hai duc tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang x hoi. ((hieu ve) OR (hieu van)) ((cham tuc) OR (nham thu)) may tinh hai duc tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang x hoi. ((hieu ve) OR (hieu van)) ((cham tuc) or (nham thu)) may tinh hai duc tre*".