Perhaps you should try some spelling variations:
tham thuc » nham thuc, tam thuc, thai thuc
pham thuc » phap thuc, pham chuc, nham thuc
nang cap » nang cao, nang cham, nang phap
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
cap hoa » tap hoa, cau hoa, cam hoa
hieu ve » hieu va, hieu van
va lanh » va lang, va danh, va hanh
dao cua » dai cua, day cua, dan cua
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 sach ky nang cap hoa. hieu ve ((tham thuc) or (pham thuc)) va lanh dao cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang cap hoa. hieu ve ((tham thuc) OR (pham thuc)) va lanh dao cua te.
• Adding a wildcard symbol may retrieve word variants: su sach ky nang cap hoa. hieu ve ((tham thuc) or (pham thuc)) va lanh dao cua te*.