Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
hoc thieu » toc thieu, hoc hien
thong dan » thong van, tuong dan, thong den
tranh va » tranh van, trang va, trinh va
trinh ve » trinh he, trinh va, trinh vi
phan lap » phan dau
phan cac » nhan cach, phan dau, phan van

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 - canh ((tranh va) or (trinh ve)) thong thong dan ((phan lap) or (phan cac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - canh ((tranh va) OR (trinh ve)) thong thong dan ((phan lap) OR (phan cac)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - canh ((tranh va) or (trinh ve)) thong thong dan ((phan lap) or (phan cac))*.