Perhaps you should try some spelling variations:
phap chong » phap phong, phap cong, pham hong
phap thong » phap phong, phap tieng, phap tang
sach tham » sach nha
pho thong » he thong
sach dao » lanh dao
thuc cac » thuc cach, tuc cac, phuc cac
cac khoi » cac thoi, cac khoan, cach thoi

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 tham) or (sach dao)) thuc cac khoi ((((phap thong) OR (phap chong))) or (pho thong))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach tham) OR (sach dao)) thuc cac khoi ((((phap thong) OR (phap chong))) OR (pho thong)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach tham) or (sach dao)) thuc cac khoi ((((phap thong) OR (phap chong))) or (pho thong))".
• Adding a wildcard symbol may retrieve word variants: te ((sach tham) or (sach dao)) thuc cac khoi ((((phap thong) OR (phap chong))) or (pho thong))*.