Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
vuc nang » cuc nang, chuc nang, van nang
pham duy » pham duc
vu nang » vu dang, v nang, vu bang
va nang » van nang, da nang, cam nang
va pham » van pham, va phat, va phap
va hanh » van hanh, va thanh, va danh
duy va » duy vat, duy van, day va
vi cua » vai cua, di cua
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach ((((vu nang) or (va nang))) or (vuc nang)) xa hoi. lieu va pham duy va hanh vi cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ((((vu nang) OR (va nang))) OR (vuc nang)) xa hoi. lieu va pham duy va hanh vi cua tu.
• Adding a wildcard symbol may retrieve word variants: thuat sach ((((vu nang) or (va nang))) or (vuc nang)) xa hoi. lieu va pham duy va hanh vi cua tu*.