Perhaps you should try some spelling variations:
lang truong » tang truong, lang trong, nang truong
truong toan » truong ton, trong toan, truong tan
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
nhung lang » nhung van, nhanh lang, nhung cong
trinh vat » trinh van, trinh luat, sinh vat
trinh va » trinh van, trinh ve, trinh vi
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 chieu xanh - hanh ((trinh va) OR (trinh vat)) nhung lang truong toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu xanh - hanh ((trinh va) OR (trinh vat)) nhung lang truong toan cao".
• Adding a wildcard symbol may retrieve word variants: theo chieu xanh - hanh ((trinh va) OR (trinh vat)) nhung lang truong toan cao*.