Perhaps you should try some spelling variations:
trinh toan » tinh toan, thanh toan, trinh han
qua trinh » qua kinh
thu sach » thuat sach, thuoc sach, thu hoach
nam thuc » nam thuoc, am thuc, nam thu
tu triet » su triet, tu thiet, tu trien
tu nang » tru nang, tu nong, tu nano
hieu ve » hieu va, hieu van
tu sach » su sach, te sach, tu cach
toan tu » toan du, tran tu, doan tu
nam tu » nam thu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sach) OR (tu sach)) tu nang x hoi. hieu ve ((nam tu) or (nam thuc)) qua trinh toan tu triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (tu sach)) tu nang x hoi. hieu ve ((nam tu) OR (nam thuc)) qua trinh toan tu triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) OR (tu sach)) tu nang x hoi. hieu ve ((nam tu) or (nam thuc)) qua trinh toan tu triet".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) OR (tu sach)) tu nang x hoi. hieu ve ((nam tu) or (nam thuc)) qua trinh toan tu triet*.