Perhaps you should try some spelling variations:
hoc thien » hoc hien, hoc thieu, hoc tien
hoc thiet » hoc thieu, hoc thuyet, hoc hien
canh manh » lanh manh, canh tranh, cach mang
tong cong » trong cong, cong cong, dung cong
dong bang » dong san
manh cua » doanh cua, ban cua
cua tong » cua cong, cua dong, cua nong
bang cau » hang cau, bang cac, nang cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc thien) OR (hoc thiet)) tinh - canh manh cua tong cong dong bang cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thien) OR (hoc thiet)) tinh - canh manh cua tong cong dong bang cau".
• Adding a wildcard symbol may retrieve word variants: ((hoc thien) OR (hoc thiet)) tinh - canh manh cua tong cong dong bang cau*.