Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
tu sach » thu sach, su sach, te sach
sach ha » sach nha, sach han, sach xa
ha lang » hoa lang, ha tang, va lang
lang xa » lang ha, dang xay, lang van
hieu va » lieu va
cam duc » cam xuc, cao duc, pham duc
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ha lang xa hoi. ((hieu va) OR (hieu qua)) cam duc tan ((thanh vai) or (thanh san)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ha lang xa hoi. ((hieu va) OR (hieu qua)) cam duc tan ((thanh vai) OR (thanh san)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ha lang xa hoi. ((hieu va) OR (hieu qua)) cam duc tan ((thanh vai) or (thanh san)) cua te".
• Adding a wildcard symbol may retrieve word variants: tu sach ha lang xa hoi. ((hieu va) OR (hieu qua)) cam duc tan ((thanh vai) or (thanh san)) cua te*.