Perhaps you should try some spelling variations:
hien thanh » thien thanh, hien hanh, tien thanh
thong cong » trong cong, tong cong, thong thong
trinh vat » trinh luat, sinh vat, trinh han
trinh van » trinh han, trinh quan, trinh toan
cong tap » cuong tap, cong tac, cong tan
tap toan » tap doan, tap quan, bai toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien thanh - nhanh ((((trinh vat) or (tich va))) or (trinh van)) thong cong tap toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien thanh - nhanh ((((trinh vat) OR (tich va))) OR (trinh van)) thong cong tap toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc hien thanh - nhanh ((((trinh vat) or (tich va))) or (trinh van)) thong cong tap toan cao*.