Perhaps you should try some spelling variations:
van thiet » va thiet, dan thiet, can thiet
chat xuc » chat huu, cam xuc, chat cua
sach ty » sach tu, sach thu, xach tay
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
va hanh » van hanh, va thanh, va danh
hanh va » hang va, hanh vi

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu ((sach ty) OR (sach y)) nang xa hoi. hieu ve ((chat xuc) or (chao xu)) va hanh va van thiet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((sach ty) OR (sach y)) nang xa hoi. hieu ve ((chat xuc) OR (chao xu)) va hanh va van thiet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu ((sach ty) OR (sach y)) nang xa hoi. hieu ve ((chat xuc) or (chao xu)) va hanh va van thiet".
• Adding a wildcard symbol may retrieve word variants: vu ((sach ty) OR (sach y)) nang xa hoi. hieu ve ((chat xuc) or (chao xu)) va hanh va van thiet*.