Perhaps you should try some spelling variations:
khong phap » chong phap, khong phai, phuong phap
thuat cong » thuat song, thuat trong, thu cong
phap thong » phap phong, phap chong, pho thong
thuat san » thuat toan, thuat song, thuat lanh
tu sach » thu sach, su sach, vu sach
tu cach » tu cac
te sach » toc sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((tu sach) or (tu cach))) or (te sach)) ki ((thuat cong) or (thuat san)) khong phap thong~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((tu sach) OR (tu cach))) OR (te sach)) ki ((thuat cong) OR (thuat san)) khong phap thong.
• Adding a wildcard symbol may retrieve word variants: ((((tu sach) or (tu cach))) or (te sach)) ki ((thuat cong) or (thuat san)) khong phap thong*.