Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, nham thuc
tham thuc » nham thuc, tam thuc, thai thuc
vien cua » viec cua, dien cua, tien cua
va thanh » gia thanh, ban thanh, le thanh
ky tang » ky nang, ky dang, kho tang
tang ma » mang may, tang van
va tinh » may tinh
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
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: su sac ky tang ma hoi. lieu va ((tham thuc) or (pham thuc)) ((va thanh) OR (va tinh)) vien cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky tang ma hoi. lieu va ((tham thuc) OR (pham thuc)) ((va thanh) OR (va tinh)) vien cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky tang ma hoi. lieu va ((tham thuc) or (pham thuc)) ((va thanh) OR (va tinh)) vien cua te".
• Adding a wildcard symbol may retrieve word variants: su sac ky tang ma hoi. lieu va ((tham thuc) or (pham thuc)) ((va thanh) OR (va tinh)) vien cua te*.