Perhaps you should try some spelling variations:
thong hoang » phuong hoang, thong thong, khung hoang
thieu sach » chieu sach, thien hach, hieu cach
nhanh lang » nhanh quang, nhanh thang, nhan dang
hoc thieu » toc thieu, hoc hien
hoang van » hang va
van nang » van quang, van ban, van dong
van chat » cao chat

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu sach - nhanh lang ((luan van) or (van nang)) thong hoang van chat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - nhanh lang ((luan van) OR (van nang)) thong hoang van chat.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - nhanh lang ((luan van) or (van nang)) thong hoang van chat*.