Perhaps you should try some spelling variations:
trong thoi » trong thi, trong tho, trong trot
hoc thiet » hoc thieu, hoc thuyet, hoc hien
thiet anh » thien anh, thuyet anh, thien danh
tranh qua » tranh cua, thanh qua, trinh qua
tac trong » cay trong, hoc trong
qua cong » cua cong, qua song, va cong
dong tac » cong tac, dong tai, dong bac

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thiet anh - canh tranh qua cong dong tac trong thoi~.
• Adding a wildcard symbol may retrieve word variants: hoc thiet anh - canh tranh qua cong dong tac trong thoi*.