Perhaps you should try some spelling variations:
thuat lanh » thuat lap, thuat san
hanh tai » thanh tai, hang tai, han tai
ty lang » tay lang, ty xang, tu lang
tai cua » thai cua, tai cuc, tri cua
ty hang » ly hang, ty xang, thi hang
hieu va » lieu va, hieu qua
tuc va » thuc va, truc va, tuc xa
va cam » va cham, va cac, va cao
xac va » tac va, ac va, bac va
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: thuat lanh ((ty lang) OR (ty hang)) xa hoi. hieu va cam ((xac va) or (tuc va)) hanh tai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat lanh ((ty lang) OR (ty hang)) xa hoi. hieu va cam ((xac va) OR (tuc va)) hanh tai cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat lanh ((ty lang) OR (ty hang)) xa hoi. hieu va cam ((xac va) or (tuc va)) hanh tai cua tu".
• Adding a wildcard symbol may retrieve word variants: thuat lanh ((ty lang) OR (ty hang)) xa hoi. hieu va cam ((xac va) or (tuc va)) hanh tai cua tu*.