Perhaps you should try some spelling variations:
su sach » so sach, vu sach
nang ma » tang ma, sang ma, nang cao
thi van » thi lan, thi hanh, thi nang
van cau » van dau, van hau, van chat
truc va » thuc va, thuc vat, trung va
va danh » va dinh, va dan, va hanh
vai cua » dai cua, hai cua, bai cua
lai cua » dai cua, hai cua, lai chau
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (vay khach)) ky nang ma hoi. thi van cau truc va danh ((vai cua) OR (lai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vay khach)) ky nang ma hoi. thi van cau truc va danh ((vai cua) OR (lai cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (vay khach)) ky nang ma hoi. thi van cau truc va danh ((vai cua) OR (lai cua)) triet".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vay khach)) ky nang ma hoi. thi van cau truc va danh ((vai cua) OR (lai cua)) triet*.