Perhaps you should try some spelling variations:
thuat nhung » thuat hung, thuat chung, thuat chuong
thuoc sach » hoc sach, nuoc sach, thuat sach
trinh toan » tinh toan, thanh toan, trinh han
qua nhung » quan nhung, cua nhung, qua chung
thu sach » tu sach, thuat sach, thu hoach
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: theo ((thu sach) OR (thuoc sach)) - hanh chinh ((thuat nhung) or (qua nhung)) cong trinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((thu sach) OR (thuoc sach)) - hanh chinh ((thuat nhung) OR (qua nhung)) cong trinh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((thu sach) OR (thuoc sach)) - hanh chinh ((thuat nhung) or (qua nhung)) cong trinh toan cau".
• Adding a wildcard symbol may retrieve word variants: theo ((thu sach) OR (thuoc sach)) - hanh chinh ((thuat nhung) or (qua nhung)) cong trinh toan cau*.