Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
hanh tai » thanh tai, hang tai, han tai
hanh dai » hanh dao, vanh dai, thanh dat
tu sang » thu sang, tu san, tu lang
sang xa » song xa, lang xa, sang ma
hieu ve » hieu va, hieu van
cac xuc » cam xuc, cac nuoc, chat xuc
xuc van » duc van, luc van, vuc van
ve cac » va cac, vien cac
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) OR (toc sach)) tu sang xa hoi. hieu ve cac xuc van ((hanh dai) or (hanh tai)) cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) tu sang xa hoi. hieu ve cac xuc van ((hanh dai) OR (hanh tai)) cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) tu sang xa hoi. hieu ve cac xuc van ((hanh dai) or (hanh tai)) cua tu".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (toc sach)) tu sang xa hoi. hieu ve cac xuc van ((hanh dai) or (hanh tai)) cua tu*.