Perhaps you should try some spelling variations:
chong phap » phuong phap
cac chong » cac chuong, cac cong, cac chung
phap tong » phap thong, phap tang, phap cong
thuat van » thuat san, thuat va, thuat ban
khoan pho » khoan nhoi, khoan phai, khoan hoi
pho thong » he thong
sach tri » sach tai, sach tren, sach truc
su sach » so sach, vu sach
tri tac » tri tai, tri mac, thi tac
tac cac » thac cac, tai cac, tap cac
van tai » von tai, van tuan
tai tuc » thai tuc, tai cuc, tai tu
tuc cac » tu cac, tich cac

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (( su sach tri tac cac chong phap tong ) or ( thuat van tai tuc cac khoan pho thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( su sach tri tac cac chong phap tong ) OR ( thuat van tai tuc cac khoan pho thong )).
• Adding a wildcard symbol may retrieve word variants: (( su sach tri tac cac chong phap tong ) or ( thuat van tai tuc cac khoan pho thong ))*.