Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, nham thuc
thuc dan » thuc hanh, hoc dan, thuc vat
sach ly » sach y, sach ty, sach hay
sach lo » sach dao, sach doi, sach hoi
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
dan dan » dang dan, ban dan, dao dan
dan lap » phan lap, dan luan
lap cua » lai cua, tap cua, lam cua
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) OR (sach lo)) nang 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) OR (sach lo)) nang x hoi. hieu ve pham thuc dan dan lap cua te".
• Adding a wildcard symbol may retrieve word variants: te ((sach ly) OR (sach lo)) nang x hoi. hieu ve pham thuc dan dan lap cua te*.