Perhaps you should try some spelling variations:
trinh toan » tinh toan, thanh toan, trinh han
thong cong » trong cong, tong cong, thong thong
hoc thieu » toc thieu
trinh va » trinh van, trinh vat, trinh ve
cong van » cong vang, cong san, song van
van toan » van tuan, van tan, van thanh
toan cau » 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) or (hoc thieu)) sach - hanh ((trinh va) or (trinh toan)) thong cong van toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc hien) OR (hoc thieu)) sach - hanh ((trinh va) OR (trinh toan)) thong cong van toan cau.
• Adding a wildcard symbol may retrieve word variants: ((hoc hien) or (hoc thieu)) sach - hanh ((trinh va) or (trinh toan)) thong cong van toan cau*.