Perhaps you should try some spelling variations:
phan thuc » nhan thuc, phap thuc, pham thuc
thuc dan » thuc hanh, hoc dan, thuc vat
te sach » toc sach
sach ly » sach y, sach lo, sach ty
ly nang » ky nang, ly hang, ly vang
ky phan » ke phan, ly phan, ky phap
dan dan » dang dan, ban dan, dao dan
dan lai » dan loai, dan lap, dan lat
chau te » chau tho
5 hoi » o hoi

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 ((5 hoi) or (x ho)). hieu ky phan thuc dan dan lai chau te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ly nang ((5 hoi) OR (x ho)). hieu ky phan thuc dan dan lai chau te.
• Adding a wildcard symbol may retrieve word variants: te sach ly nang ((5 hoi) or (x ho)). hieu ky phan thuc dan dan lai chau te*.