Perhaps you should try some spelling variations:
vu sach » su sach, vu khach
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
qua cac » cua cac
cac tuc » cac toc, cac tu, cac tac
va hanh » van hanh, va thanh, va danh
lai cua » dai cua, hai cua, lai chau
tuc va » thuc va, truc va, tuc xa
vi cua » vai cua, di cua

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) or (vu bach)) ky lang xa hoi. hieu qua cac tuc va hanh ((vi cua) or (lai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (vu bach)) ky lang xa hoi. hieu qua cac tuc va hanh ((vi cua) OR (lai cua)) triet.
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (vu bach)) ky lang xa hoi. hieu qua cac tuc va hanh ((vi cua) or (lai cua)) triet*.