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