Perhaps you should try some spelling variations:
danh vai » danh sai, danh va, doanh van
vai cua » dai cua, hai cua, lai cua
va danh » va dinh, va dan, va hanh
cao suc » cao su, cao duc
sach ky » sac ky, sach ty, sach kem
hieu ve » hieu va, hieu van
tang ma » mang may, tang van
ma hoi » mai hoi, xa hoi, ma hoa
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 ky) OR (sach y)) tang ma hoi. hieu ve ((pham duc) or (cao suc)) va danh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat ((sach ky) OR (sach y)) tang ma hoi. hieu ve ((pham duc) OR (cao suc)) va danh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat ((sach ky) OR (sach y)) tang ma hoi. hieu ve ((pham duc) or (cao suc)) va danh vai cua te".
• Adding a wildcard symbol may retrieve word variants: thuat ((sach ky) OR (sach y)) tang ma hoi. hieu ve ((pham duc) or (cao suc)) va danh vai cua te*.