Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, nham thuc
cua triet » cua viet, su triet, va triet
nang mai » nang ma, nang tai, lang mai
mai khoi » mai khoa, tai khoa, cac khoi
thuc van » thuc vat, thuc dan, thuc va
van hang » van khang, van hoang, van thang
hang tai » hang va, dung tai
te sach » toc sach
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
y nang » ky nang, ly nang, v nang
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: te sach y nang mai khoi. hieu ve pham thuc van hang tai ((cua te) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang mai khoi. hieu ve pham thuc van hang tai ((cua te) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: te sach y nang mai khoi. hieu ve pham thuc van hang tai ((cua te) or (cua triet))*.