Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
chu nang » chuc nang, chua nang, chu bang
cuu nang » chuc nang, cam nang, cuu van
pham duy » pham duc
vu nang » vuc nang, va nang, vu dang
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 te » cua tu

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 (((chu nang) OR (cuu nang)))) xa hoi. lieu va pham duy va hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ((vu nang) OR (((chu nang) OR (cuu nang)))) xa hoi. lieu va pham duy va hanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ((vu nang) or (((chu nang) OR (cuu nang)))) xa hoi. lieu va pham duy va hanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: thuat sach ((vu nang) or (((chu nang) OR (cuu nang)))) xa hoi. lieu va pham duy va hanh vi cua te*.