Perhaps you should try some spelling variations:
pham thuc » phap thuc, pham chuc, nham thuc
thuc dan » thuc hanh, hoc dan, thuc vat
dan hanh » dang hanh, dan khanh, dan thanh
sinh ky » sinh ly, sinh y, kinh ky
cao hoi » cau hoi, co hoi, cao hoc
hieu vi » hieu voi, hieu va, hieu ve
hanh va » hang va, hanh vi
su tien » su kien, tu tieng, dau tien
su hien » su kien, thu hien, nhu hien

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sinh ky nang cao hoi. hieu vi pham thuc dan hanh va ((su tien) OR (su hien))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sinh ky nang cao hoi. hieu vi pham thuc dan hanh va ((su tien) OR (su hien))".
• Adding a wildcard symbol may retrieve word variants: hoc sinh ky nang cao hoi. hieu vi pham thuc dan hanh va ((su tien) OR (su hien))*.