Perhaps you should try some spelling variations:
tranh hang » trinh han, tran hoang, tran hong
hoach hoc » hoach hoi, hoach hoa, cach hoc
hoi tranh » hoi thanh, thoi trang, hoi trac
cuu dong » cuu cong, cuu tong, cuu long
hoc hanh » hoc nhanh, hoc thanh, thuc hanh
hang tai » hang va, dung tai
hoc anh » hoc nganh, hoc nhanh, ngoc anh
hoc xa » hoc ma

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu hoach hoc tap, nghien cuu dong ((hoc hanh) OR (hoc anh)) hoa hoc xa hoi tranh hang tai~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu hoach hoc tap, nghien cuu dong ((hoc hanh) OR (hoc anh)) hoa hoc xa hoi tranh hang tai".
• Adding a wildcard symbol may retrieve word variants: thu hoach hoc tap, nghien cuu dong ((hoc hanh) OR (hoc anh)) hoa hoc xa hoi tranh hang tai*.