Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
va thanh » gia thanh, ban thanh, va tinh
pham duy » pham duc
vuc nang » cuc nang, chuc nang, van nang
va pham » van pham, va phat, va phap
vu nang » va nang, vu dang, v nang
duy va » duy vat, duy van, day va
vi cua » vai cua
di cua » dai cua, doi cua, de cua

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 (vuc nang)) xa hoi. lieu va pham duy va thanh ((vi cua) or (di cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ((vu nang) OR (vuc nang)) xa hoi. lieu va pham duy va thanh ((vi cua) OR (di cua)) tre.
• Adding a wildcard symbol may retrieve word variants: thuat sach ((vu nang) or (vuc nang)) xa hoi. lieu va pham duy va thanh ((vi cua) or (di cua)) tre*.