Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, nham thuc
thuc dan » thuc hanh, hoc dan, thuc vat
te sach » toc sach
ly nang » ky nang, ly quang, may nang
lap cua » lai cua, tap cua, lam cua
dan lap » phan lap, dan luan
ly vang » ly van, ly quang
dan dan » dang dan, ban dan, dao dan
ly hang » ly quang
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
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 vang) OR (ly hang)))) x hoi. hieu ve pham thuc dan dan lap cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ly nang) OR (((ly vang) OR (ly hang)))) x hoi. hieu ve pham thuc dan dan lap cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ly nang) or (((ly vang) OR (ly hang)))) x hoi. hieu ve pham thuc dan dan lap cua te".
• Adding a wildcard symbol may retrieve word variants: te sach ((ly nang) or (((ly vang) OR (ly hang)))) x hoi. hieu ve pham thuc dan dan lap cua te*.