Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, nham thuc
thanh cay » thanh tay, nhanh cay, thanh ca
toc sach » hoc sach, doc sach, thuoc sach
nang mai » nang ma, nang tai, lang mai
cham tuc » nham thuc, tham thuc, cham soc
va thanh » gia thanh, ban thanh, va tinh
sach ky » sac ky, sach y, sach ty
mai hoi » mai khoi, dai hoi, lai hoi
hieu ve » hieu va, hieu van
cay cua » ca cua, day cua, cay ca
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ky nang mai hoi. hieu ve ((cham tuc) or (pham thuc)) va thanh cay cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ky nang mai hoi. hieu ve ((cham tuc) OR (pham thuc)) va thanh cay cua tu.
• Adding a wildcard symbol may retrieve word variants: toc sach ky nang mai hoi. hieu ve ((cham tuc) or (pham thuc)) va thanh cay cua tu*.