Perhaps you should try some spelling variations:
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
ve pham » vi pham, ve phan, ve phat
va hanh » van hanh, va thanh, va danh
v pham » vi pham, d pham
vit ca » viet ca, viet cau
vi ca » li ca, va ca, vi ha

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 ky nang xa hoi. hieu ((ve pham) OR (v pham)) tu va hanh ((vi ca) or (vit ca)) tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang xa hoi. hieu ((ve pham) OR (v pham)) tu va hanh ((vi ca) OR (vit ca)) tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang xa hoi. hieu ((ve pham) OR (v pham)) tu va hanh ((vi ca) or (vit ca)) tren".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang xa hoi. hieu ((ve pham) OR (v pham)) tu va hanh ((vi ca) or (vit ca)) tren*.