Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
trong quan » thong quan, tong quan, thong quang
tran tuan » tran xuan, tran quang, tran thanh
cong vang » cong lang, cong quang, cong ngang
vang thai » dang thai, lang thai, van thai
thai cao » tai cao, thoai cac, thuat cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu sach - hanh ((trong quan) or (tran tuan)) trong cong vang thai cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu sach - hanh ((trong quan) OR (tran tuan)) trong cong vang thai cao.
• Adding a wildcard symbol may retrieve word variants: toc thieu sach - hanh ((trong quan) or (tran tuan)) trong cong vang thai cao*.