Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, nham thuc
thuc dan » thuc hanh, hoc dan, thuc vat
phan lap » phan dau
te sach » toc sach
dan lap » dan luan
va pham » van pham, va phat, va phap
hieu va » lieu va, hieu qua
ly hang » ly quang
ly nang » ky nang, ly vang, ly quang
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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 ((ly nang) or (ly hang)) x hoi. hieu va pham thuc dan ((dan lap) or (phan lap)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ly nang) OR (ly hang)) x hoi. hieu va pham thuc dan ((dan lap) OR (phan lap)) cua te.
• Adding a wildcard symbol may retrieve word variants: te sach ((ly nang) or (ly hang)) x hoi. hieu va pham thuc dan ((dan lap) or (phan lap)) cua te*.